[SpringCloud] upgrade swagger version to 2022-04-01 (#19108)

* [SpringCloud]upgrade version to 2022-04-01.

* [SpringCloud]build project.

* [SpringCloud] customization.

* [SpringCloud] change help docs.

* [SpringCloud]update readme.md

* [SpringCloud]add cutomization script and examples.

* [SpringCloud]no need cmdlet.

* [SpringCloud]rebuild project.

* [SpringCloud]add test cases.

* [SpringCloud] add exception to SignatureIssues.

Author: LucasYao93

src/SpringCloud/.gitignore

@@ -4,7 +4,9 @@ obj
 generated
 internal
 exports
+tools
 custom/*.psm1
+custom/autogen-model-cmdlets
 test/*-TestResults.xml
 /*.ps1
 /*.ps1xml

src/SpringCloud/Az.SpringCloud.psd1

@@ -11,7 +11,7 @@
   DotNetFrameworkVersion = '4.7.2'
   RequiredAssemblies = './bin/Az.SpringCloud.private.dll'
   FormatsToProcess = './Az.SpringCloud.format.ps1xml'
-  FunctionsToExport = 'Deploy-AzSpringCloudApp', 'Get-AzSpringCloud', 'Get-AzSpringCloudApp', 'Get-AzSpringCloudAppDeployment', 'New-AzSpringCloud', 'New-AzSpringCloudApp', 'New-AzSpringCloudAppDeployment', 'Remove-AzSpringCloud', 'Remove-AzSpringCloudApp', 'Remove-AzSpringCloudAppDeployment', 'Restart-AzSpringCloudAppDeployment', 'Start-AzSpringCloudAppDeployment', 'Stop-AzSpringCloudAppDeployment', 'Update-AzSpringCloud', 'Update-AzSpringCloudApp', 'Update-AzSpringCloudAppDeployment', '*'
+  FunctionsToExport = 'Deploy-AzSpringCloudApp', 'Disable-AzSpringCloudTestEndpoint', 'Enable-AzSpringCloudTestEndpoint', 'Get-AzSpringCloud', 'Get-AzSpringCloudApp', 'Get-AzSpringCloudAppBinding', 'Get-AzSpringCloudAppCustomDomain', 'Get-AzSpringCloudAppDeployment', 'Get-AzSpringCloudAppDeploymentLogFileUrl', 'Get-AzSpringCloudBuildpackBinding', 'Get-AzSpringCloudBuildService', 'Get-AzSpringCloudBuildServiceAgentPool', 'Get-AzSpringCloudBuildServiceBuilder', 'Get-AzSpringCloudBuildServiceSupportedBuildpack', 'Get-AzSpringCloudBuildServiceSupportedStack', 'Get-AzSpringCloudCertificate', 'Get-AzSpringCloudConfigServer', 'Get-AzSpringCloudConfigurationService', 'Get-AzSpringCloudMonitoringSetting', 'Get-AzSpringCloudRegistry', 'Get-AzSpringCloudRuntimeVersion', 'Get-AzSpringCloudSku', 'Get-AzSpringCloudTestKey', 'New-AzSpringCloud', 'New-AzSpringCloudApp', 'New-AzSpringCloudAppBinding', 'New-AzSpringCloudAppCustomDomain', 'New-AzSpringCloudAppDeployment', 'New-AzSpringCloudAppDeploymentBuildResultObject', 'New-AzSpringCloudAppDeploymentJarUploadedObject', 'New-AzSpringCloudAppDeploymentNetCoreZipUploadedObject', 'New-AzSpringCloudAppDeploymentSourceUploadedObject', 'New-AzSpringCloudAppLoadedCertificateObject', 'New-AzSpringCloudBuildpackBinding', 'New-AzSpringCloudBuildpackObject', 'New-AzSpringCloudBuildpacksGroupObject', 'New-AzSpringCloudBuildServiceAgentPool', 'New-AzSpringCloudBuildServiceBuilder', 'New-AzSpringCloudCertificate', 'New-AzSpringCloudConfigurationService', 'New-AzSpringCloudConfigurationServiceGitRepositoryObject', 'New-AzSpringCloudContentCertificateObject', 'New-AzSpringCloudGitPatternRepositoryObject', 'New-AzSpringCloudKeyVaultCertificateObject', 'New-AzSpringCloudTestKey', 'Remove-AzSpringCloud', 'Remove-AzSpringCloudApp', 'Remove-AzSpringCloudAppBinding', 'Remove-AzSpringCloudAppCustomDomain', 'Remove-AzSpringCloudAppDeployment', 'Remove-AzSpringCloudBuildpackBinding', 'Remove-AzSpringCloudBuildServiceBuilder', 'Remove-AzSpringCloudCertificate', 'Remove-AzSpringCloudConfigurationService', 'Restart-AzSpringCloudAppDeployment', 'Start-AzSpringCloudAppDeployment', 'Start-AzSpringCloudAppDeploymentJfr', 'Stop-AzSpringCloudAppDeployment', 'Test-AzSpringCloudAppCustomDomain', 'Test-AzSpringCloudConfigServer', 'Test-AzSpringCloudConfigurationService', 'Test-AzSpringCloudNameAvailability', 'Update-AzSpringCloud', 'Update-AzSpringCloudApp', 'Update-AzSpringCloudAppActiveDeployment', 'Update-AzSpringCloudAppBinding', 'Update-AzSpringCloudAppCustomDomain', 'Update-AzSpringCloudAppDeployment', 'Update-AzSpringCloudConfigServer', 'Update-AzSpringCloudMonitoringSetting', '*'
   AliasesToExport = '*'
   PrivateData = @{
     PSData = @{