Add support to micro-version

This patch adds support to api-microversioning from senlinclient.

Change-Id: Ic37acfca53473d7a3e9a234288886b98e88e63b9

senlinclient/common/sdk.py

@@ -133,6 +133,7 @@ def create_connection(prof=None, user_agent=None, **kwargs):
         if region_name:
             prof.set_region('clustering', region_name)
 
+        prof.set_api_version('clustering', '1.2')
         try:
             conn = connection.Connection(profile=prof, user_agent=user_agent,
                                          **kwargs)

senlinclient/v1/shell.py

@@ -515,7 +515,7 @@ def do_cluster_collect(service, args):
         utils.print_list(attrs, fields, formatters=formatters)
     else:
         for attr in attrs:
-            print(attr.value)
+            print(attr.attr_value)
 
 
 @utils.arg('id', metavar='<CLUSTER>', nargs='+',