Adding a demo for the Activate operation

This change adds a unit demo for the Activate operation. The operation
accepts the UID of a KMIP managed object that needs to be activated for
future use.

kmip/demos/utils.py

@@ -125,6 +125,15 @@ def build_cli_parser(operation):
             default=None,
             dest="uuid",
             help="UUID of secret to delete from the KMIP server")
+    elif operation is Operation.ACTIVATE:
+        parser.add_option(
+            "-i",
+            "--uuid",
+            action="store",
+            type="str",
+            default=None,
+            dest="uuid",
+            help="UUID of secret to activate on the KMIP server")
     elif operation is Operation.GET:
         parser.add_option(
             "-i",