Updating Azure Gov STS and Traffic Manager

Updating the STS URL for Azure Gov to the US Only STS that was stood up
for Azure Gov.

Adding the Traffic Manager Suffix

Updating the Add-AzureAccount and Add-AzureRMAccount documentation to
include AzureUSGovernment in the text and to change Environment to
EnvironmentName to be easier to use.

Author: zakramer

src/Common/Commands.Common.Authentication/Models/AzureEnvironment.Methods.cs

@@ -146,12 +146,12 @@ private string StorageFileEndpointFormat()
                         { AzureEnvironment.Endpoint.Gallery, AzureEnvironmentConstants.USGovernmentGalleryEndpoint },
                         { AzureEnvironment.Endpoint.SqlDatabaseDnsSuffix, AzureEnvironmentConstants.USGovernmentSqlDatabaseDnsSuffix },
                         { AzureEnvironment.Endpoint.Graph, AzureEnvironmentConstants.USGovernmentGraphEndpoint },
-                        { AzureEnvironment.Endpoint.TrafficManagerDnsSuffix, null },
+                        { AzureEnvironment.Endpoint.TrafficManagerDnsSuffix, AzureEnvironmentConstants.USGovernmentTrafficManagerDnsSuffix },
                         { AzureEnvironment.Endpoint.AzureKeyVaultDnsSuffix, AzureEnvironmentConstants.USGovernmentKeyVaultDnsSuffix},
                         { AzureEnvironment.Endpoint.AzureKeyVaultServiceEndpointResourceId, AzureEnvironmentConstants.USGovernmentKeyVaultServiceEndpointResourceId},
                         { AzureEnvironment.Endpoint.AzureDataLakeAnalyticsCatalogAndJobEndpointSuffix, null},
                         { AzureEnvironment.Endpoint.AzureDataLakeStoreFileSystemEndpointSuffix, null},
-                        {AzureEnvironment.Endpoint.GraphEndpointResourceId, AzureEnvironmentConstants.USGovernmentGraphEndpoint}
+                        { AzureEnvironment.Endpoint.GraphEndpointResourceId, AzureEnvironmentConstants.USGovernmentGraphEndpoint }
                     }
                 }
             }
@@ -391,7 +391,7 @@ public static class AzureEnvironmentConstants
 
         public const string ChinaActiveDirectoryEndpoint = "https://login.chinacloudapi.cn/";
 
-        public const string USGovernmentActiveDirectoryEndpoint = "https://login.microsoftonline.com/";
+        public const string USGovernmentActiveDirectoryEndpoint = "https://login-us.microsoftonline.com/";
 
         public const string AzureGraphEndpoint = "https://graph.windows.net/";
 
@@ -403,6 +403,8 @@ public static class AzureEnvironmentConstants
 
         public const string ChinaTrafficManagerDnsSuffix = "trafficmanager.cn";
 
+        public const string USGovernmentTrafficManagerDnsSuffix = "usgovtrafficmanager.net";
+
         public const string AzureKeyVaultDnsSuffix = "vault.azure.net";
 
         public const string ChinaKeyVaultDnsSuffix = "vault.azure.cn";

src/ResourceManager/Profile/Commands.Profile/Microsoft.Azure.Commands.Profile.dll-Help.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <helpItems xmlns="http://msh" schema="maml">
   <!-- Updatable Help Version 2.0.1.0 -->
   <command:command xmlns:maml="http://schemas.microsoft.com/maml/2004/10" xmlns:command="http://schemas.microsoft.com/maml/dev/command/2004/10" xmlns:dev="http://schemas.microsoft.com/maml/dev/2004/10" xmlns:MSHelp="http://msdn.microsoft.com/mshelp">
@@ -22,9 +22,9 @@
       <command:syntaxItem>
         <maml:name>Add-AzureRmAccount</maml:name>
         <command:parameter required="false" variableLength="false" globbing="false" pipelineInput="false" position="named" aliases="none">
-          <maml:name>Environment</maml:name>
+          <maml:name>EnvironmentName</maml:name>
           <maml:description>
-            <maml:para>Specifies the Azure environment. Valid values are: AzureCloud, AzureChinaCloud. The default is AzureCloud.</maml:para>
+            <maml:para>Specifies the Azure environment. Valid values are: AzureCloud, AzureChinaCloud, AzureUSGovernment. The default is AzureCloud.</maml:para>
           </maml:description>
           <command:parameterValue required="false" variableLength="false">AzureEnvironment</command:parameterValue>
         </command:parameter>
@@ -69,9 +69,9 @@
           <command:parameterValue required="false" variableLength="false">PSCredential</command:parameterValue>
         </command:parameter>
         <command:parameter required="false" variableLength="false" globbing="false" pipelineInput="false" position="named" aliases="none">
-          <maml:name>Environment</maml:name>
+          <maml:name>EnvironmentName</maml:name>
           <maml:description>
-            <maml:para>Specifies the Azure environment. Valid values are: AzureCloud, AzureChinaCloud. The default is AzureCloud.</maml:para>
+            <maml:para>Specifies the Azure environment. Valid values are: AzureCloud, AzureChinaCloud, AzureUSGovernment. The default is AzureCloud.</maml:para>
           </maml:description>
           <command:parameterValue required="false" variableLength="false">AzureEnvironment</command:parameterValue>
         </command:parameter>
@@ -109,9 +109,9 @@
           <command:parameterValue required="false" variableLength="false">PSCredential</command:parameterValue>
         </command:parameter>
         <command:parameter required="false" variableLength="false" globbing="false" pipelineInput="false" position="named" aliases="none">
-          <maml:name>Environment</maml:name>
+          <maml:name>EnvironmentName</maml:name>
           <maml:description>
-            <maml:para>Specifies the Azure environment. Valid values are: AzureCloud, AzureChinaCloud. The default is AzureCloud.</maml:para>
+            <maml:para>Specifies the Azure environment. Valid values are: AzureCloud, AzureChinaCloud, AzureUSGovernment. The default is AzureCloud.</maml:para>
           </maml:description>
           <command:parameterValue required="false" variableLength="false">AzureEnvironment</command:parameterValue>
         </command:parameter>
@@ -172,9 +172,9 @@
         <dev:defaultValue>none</dev:defaultValue>
       </command:parameter>
       <command:parameter required="false" variableLength="false" globbing="false" pipelineInput="false" position="named" aliases="none">
-        <maml:name>Environment</maml:name>
+        <maml:name>EnvironmentName</maml:name>
         <maml:description>
-          <maml:para>Specifies the Azure environment. Valid values are: AzureCloud, AzureChinaCloud. The default is AzureCloud.</maml:para>
+          <maml:para>Specifies the Azure environment. Valid values are: AzureCloud, AzureChinaCloud, AzureUSGovernment. The default is AzureCloud.</maml:para>
         </maml:description>
         <command:parameterValue required="false" variableLength="false">AzureEnvironment</command:parameterValue>
         <dev:type>