Adding unit demos for the Pie ProxyKmipClient

This change adds a new suite of unit demos for the new Pie
ProxyKmipClient. The demos show how to create the ProxyKmipClient and
how to use all of its primary operations. Demo utilities are updated to
support the new suite.

kmip/demos/utils.py

@@ -43,11 +43,11 @@ import optparse
 import sys
 
 
-def build_cli_parser(operation):
+def build_cli_parser(operation=None):
     # Build the argument parser and setup expected options
     parser = optparse.OptionParser(
         usage="%prog [options]",
-        description="Run KMIP client {0} operation".format(operation.name))
+        description="Run KMIP client operation")
 
     parser.add_option(
         "-u",
@@ -190,12 +190,6 @@ def build_cli_parser(operation):
             help=("Type of the object to register. Supported types include: "
                   "CERTIFICATE, PRIVATE_KEY, PUBLIC_KEY, SYMMETRIC_KEY, "
                   "SECRET_DATA"))
-    elif operation is Operation.QUERY:
-        pass
-    elif operation is Operation.DISCOVER_VERSIONS:
-        pass
-    else:
-        raise ValueError("unrecognized operation: {0}".format(operation))
 
     return parser