add warning messages

src/azure-cli-core/azure/cli/core/cloud.py

@@ -602,10 +602,11 @@ def get_clouds(cli_ctx):
                 "2019-03-01-hybrid",
                 "2020-09-01-hybrid",
             ):
-                raise CLIError(
-                    "The azure stack profile '{}' has been deprecated and removed, please use the 'latest' profile instead."
-                    "To continue using Azure Stack please install the CLI 2.66.* (LTS) version.".format(c.profile)
+                logger.error(
+                    "The azure stack profile '{}' has been deprecated and removed, using the 'latest' profile instead.\n"
+                    "To continue using Azure Stack please install the CLI `2.66.*` (LTS) version.".format(c.profile)
                 )
+                c.profile = 'latest'
             else:
                 raise CLIError('Profile {} does not exist or is not supported.'.format(c.profile))
         if not c.endpoints.has_endpoint_set('management') and \

src/azure-cli/azure/cli/command_modules/cloud/__init__.py

@@ -40,7 +40,7 @@ def load_arguments(self, command):
         # pylint: disable=line-too-long
         with self.argument_context('cloud') as c:
             c.argument('cloud_name', options_list=('--name', '-n'), help='Name of a registered cloud', completer=get_cloud_name_completion_list)
-            c.argument('profile', help='Profile to use for this cloud', choices=list(API_PROFILES))
+            c.argument('profile', help='Profile to use for this cloud. The azure stack profiles `2017-03-09-profile` `2018-03-01-hybrid` `2019-03-01-hybrid` and `2020-09-01-hybrid` have been deprecated and removed. To continue using Azure Stack please install the CLI 2.66.* (LTS) version.', choices=list(API_PROFILES))
             c.argument('cloud_config', options_list=('--cloud-config',), help='JSON encoded cloud configuration. Use @{file} to load from a file.', type=shell_safe_json_parse)
             c.argument('endpoint_management', help='The management service endpoint')
             c.argument('endpoint_resource_manager', help='The resource management endpoint')