{Cosmosdb-preview} Adding param azure-connection-method to Managed cassandra cluster Create (Azure#8637)

* adding param azure-connection-method for managed cassandra VPN

* lint fixes

* add test case for azure-connection-method for VPN MI cassandra cluster

* reducing the size of option name for lint concern

* adding release versions and details

Author: sachinAtMS

src/cosmosdb-preview/HISTORY.rst

@@ -1,6 +1,10 @@
 .. :changelog:
 Release History
 ===============
+1.3.0
+*  Add support for VPN cluster deployments in managed cassandra.
+
++++++++
 1.2.1
 * 'az cosmosdb restore': Remove restore validations which would cause timeouts for large restore
 

src/cosmosdb-preview/azext_cosmosdb_preview/_params.py

@@ -183,6 +183,7 @@ def load_arguments(self, _):
         c.argument('initial_cassandra_admin_password', options_list=['--initial-cassandra-admin-password', '-i'], help="The intial password to be configured when a cluster is created for authentication_method Cassandra.")
         c.argument('restore_from_backup_id', help="The resource id of a backup. If provided on create, the backup will be used to prepopulate the cluster. The cluster data center count and node counts must match the backup.")
         c.argument('cluster_name_override', help="If a cluster must have a name that is not a valid azure resource name, this field can be specified to choose the Cassandra cluster name. Otherwise, the resource name will be used as the cluster name.")
+        c.argument('azure_connection_method', options_list=['--azure-connection-method', '-q'], help="This field can be specified to create VPN based Cassandra cluster, where the datacenter is in customers vnet with limited permissions to azure.")
 
     # Managed Cassandra Cluster
     for scope in ['managed-cassandra cluster backup show']:

src/cosmosdb-preview/azext_cosmosdb_preview/custom.py

@@ -339,7 +339,8 @@ def cli_cosmosdb_managed_cassandra_cluster_create(client,
                                                   hours_between_backups=None,
                                                   repair_enabled=None,
                                                   cluster_type='Production',
-                                                  extensions=None):
+                                                  extensions=None,
+                                                  azure_connection_method=None):
 
     """Creates an Azure Managed Cassandra Cluster"""
 
@@ -362,7 +363,8 @@ def cli_cosmosdb_managed_cassandra_cluster_create(client,
         hours_between_backups=hours_between_backups,
         repair_enabled=repair_enabled,
         cluster_type=cluster_type,
-        extensions=extensions)
+        extensions=extensions,
+        azure_connection_method=azure_connection_method)
 
     managed_service_identity_parameter = ManagedCassandraManagedServiceIdentity(
         type=identity_type
@@ -451,8 +453,8 @@ def cli_cosmosdb_managed_cassandra_cluster_update(client,
         external_seed_nodes=cluster_resource.properties.external_seed_nodes,
         seed_nodes=cluster_resource.properties.seed_nodes,
         cluster_type=cluster_type,
-        extensions=extensions
-    )
+        extensions=extensions,
+        azure_connection_method=cluster_resource.properties.azure_connection_method)
 
     cluster_resource_create_update_parameters = ClusterResource(
         location=cluster_resource.location,