Expand CLI test

Start nova-manage simple read only test

Change-Id: I4f52e804220b0b9d1357ee6b8b034e48d82f0aee
diff --git a/cli/__init__.py b/cli/__init__.py
index e97fe3e..bc967cc 100644
--- a/cli/__init__.py
+++ b/cli/__init__.py
@@ -56,6 +56,11 @@
         return self.cmd_with_auth(
             'nova', action, flags, params, admin, fail_ok)
 
+    def nova_manage(self, action, flags='', params='', fail_ok=False):
+        """Executes nova-manage command for the given action."""
+        return self.cmd(
+            'nova-manage', action, flags, params, fail_ok)
+
     def cmd_with_auth(self, cmd, action, flags='', params='',
                       admin=True, fail_ok=False):
         """Executes given command with auth attributes appended."""