removing project references to Newtonsoft.Json v9

Author: Dragos Avadanei

src/ResourceManager/KeyVault/Commands.KeyVault.Test/Commands.KeyVault.Test.csproj

@@ -139,7 +139,7 @@
       <HintPath>..\..\..\packages\Moq.4.2.1510.2205\lib\net40\Moq.dll</HintPath>
     </Reference>
     <Reference Include="Newtonsoft.Json">
-      <HintPath>..\..\..\packages\Newtonsoft.Json.9.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
+      <HintPath>..\..\..\packages\Newtonsoft.Json.6.0.8\lib\net45\Newtonsoft.Json.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Management.Automation, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">

src/ResourceManager/KeyVault/Commands.KeyVault.Test/packages.config

@@ -22,7 +22,7 @@
   <package id="Microsoft.Rest.ClientRuntime.Azure.TestFramework" version="1.5.1-preview" targetFramework="net45" />
   <package id="Microsoft.WindowsAzure.Management" version="4.1.1" targetFramework="net45" />
   <package id="Moq" version="4.2.1510.2205" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net452" />
+  <package id="Newtonsoft.Json" version="6.0.8" targetFramework="net452" />
   <package id="xunit" version="2.1.0" targetFramework="net45" />
   <package id="xunit.abstractions" version="2.0.0" targetFramework="net45" />
   <package id="xunit.assert" version="2.1.0" targetFramework="net45" />