Add sql mi maintenance configuration examples (#14216)

* Update create example

* Update examples for update MI scenario

* Update changelog

* Update ChangeLog.md

Co-authored-by: Yabo Hu <[email protected]>

Author: kukislav

src/Sql/Sql/help/New-AzSqlInstance.md

@@ -175,6 +175,37 @@ InstancePoolName         : instancePool0
 
 This command creates a new instance in an instance pool with name instancePool0
 
+### Example 6: Create a new instance with maintenance configuration
+```powershell
+PS C:\>New-AzSqlInstance -Name managedInstance1 -ResourceGroupName resourcegroup01 -Location "westus" -AdministratorCredential (Get-Credential) -SubnetId "/subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/resourcegroup01/providers/Microsoft.Network/virtualNetworks/vnet_name/subnets/subnet_name" -VCore 8 -ComputeGeneration Gen5 -Edition GeneralPurpose -MaintenanceConfigurationId "/subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/providers/Microsoft.Maintenance/publicMaintenanceConfigurations/SQL_WestUS_MI_2"
+Location                   : westus
+Id                         : /subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/resourcegroup01/providers/Microsoft.Sql/managedInstances/managedInstance1
+ResourceGroupName          : resourcegroup01
+ManagedInstanceName        : managedInstance1
+Tags                       :
+Identity                   :
+Sku                        : Microsoft.Azure.Management.Internal.Resources.Models.Sku
+FullyQualifiedDomainName   : managedInstance1.wusxxxxxxxxxxxxx.database.windows.net
+AdministratorLogin         : adminLogin1
+AdministratorPassword      :
+SubnetId                   : /subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/resourcegroup01/providers/Microsoft.Network/virtualNetworks/vnet_name/subnets/subnet_name
+LicenseType                : LicenseIncluded
+VCores                     : 8
+StorageSizeInGB            : 256
+Collation                  : SQL_Latin1_General_CP1_CI_AS
+PublicDataEndpointEnabled  : False
+ProxyOverride              :
+TimezoneId                 : UTC
+DnsZonePartner             :
+DnsZone                    : ad35cna0mw
+InstancePoolName           :
+MinimalTlsVersion          :
+BackupStorageRedundancy    : Geo
+MaintenanceConfigurationId : /subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/providers/Microsoft.Maintenance/publicMaintenanceConfigurations/SQL_WestUS_MI_2
+```
+
+This command creates a new instance with maintenance configuration MI_2
+
 ## PARAMETERS
 
 ### -AdministratorCredential

src/Sql/Sql/help/Set-AzSqlInstance.md

@@ -114,6 +114,68 @@ InstancePoolName         : instancePool0
 
 This command sets existing instance using new values for -AdministratorPassword, -LicenseType, -StorageSizeInGB and -VCore for an instance within an instance pool
 
+### Example 4: Update maintenance configuration for existing instance
+```powershell
+PS C:\> Set-AzSqlInstance -Name "managedInstance1" -ResourceGroupName "resourcegroup01" -MaintenanceConfigurationId "/subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/providers/Microsoft.Maintenance/publicMaintenanceConfigurations/SQL_WestUS_MI_2"
+Location                   : westus
+Id                         : /subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/resourcegroup01/providers/Microsoft.Sql/managedInstances/managedInstance1
+ResourceGroupName          : resourcegroup01
+ManagedInstanceName        : managedInstance1
+Tags                       :
+Identity                   :
+Sku                        : Microsoft.Azure.Management.Internal.Resources.Models.Sku
+FullyQualifiedDomainName   : managedInstance1.wusxxxxxxxxxxxxx.database.windows.net
+AdministratorLogin         : adminLogin1
+AdministratorPassword      :
+SubnetId                   : /subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/resourcegroup01/providers/Microsoft.Network/virtualNetworks/vnet_name/subnets/subnet_name
+LicenseType                : LicenseIncluded
+VCores                     : 8
+StorageSizeInGB            : 256
+Collation                  : SQL_Latin1_General_CP1_CI_AS
+PublicDataEndpointEnabled  : False
+ProxyOverride              :
+TimezoneId                 : UTC
+DnsZonePartner             :
+DnsZone                    : ad35cna0mw
+InstancePoolName           :
+MinimalTlsVersion          :
+BackupStorageRedundancy    : Geo
+MaintenanceConfigurationId : /subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/providers/Microsoft.Maintenance/publicMaintenanceConfigurations/SQL_WestUS_MI_2
+```
+
+This command updates existing instance with maintenance configuration MI_2
+
+### Example 5: Remove maintenance configuration from existing instance
+```powershell
+PS C:\> Set-AzSqlInstance -Name "managediInstance1" -ResourceGroupName "Resourcegroup01" -MaintenanceConfigurationId "/subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/providers/Microsoft.Maintenance/publicMaintenanceConfigurations/SQL_Default"
+Location                   : westus
+Id                         : /subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/resourcegroup01/providers/Microsoft.Sql/managedInstances/managedInstance1
+ResourceGroupName          : resourcegroup01
+ManagedInstanceName        : managedInstance1
+Tags                       :
+Identity                   :
+Sku                        : Microsoft.Azure.Management.Internal.Resources.Models.Sku
+FullyQualifiedDomainName   : managedInstance1.wusxxxxxxxxxxxxx.database.windows.net
+AdministratorLogin         : adminLogin1
+AdministratorPassword      :
+SubnetId                   : /subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/resourcegroup01/providers/Microsoft.Network/virtualNetworks/vnet_name/subnets/subnet_name
+LicenseType                : LicenseIncluded
+VCores                     : 8
+StorageSizeInGB            : 256
+Collation                  : SQL_Latin1_General_CP1_CI_AS
+PublicDataEndpointEnabled  : False
+ProxyOverride              :
+TimezoneId                 : UTC
+DnsZonePartner             :
+DnsZone                    : ad35cna0mw
+InstancePoolName           :
+MinimalTlsVersion          :
+BackupStorageRedundancy    : Geo
+MaintenanceConfigurationId : /subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/providers/Microsoft.Maintenance/publicMaintenanceConfigurations/SQL_Default
+```
+
+This command resets maintenance configuration to default for existing instance
+
 ## PARAMETERS
 
 ### -AdministratorPassword