Adding support for the Query operation

This change adds support for the Query operation, including updates to
the KMIP client and core object libraries, the KMIP client and core unit
test suites, and a Query unit demo.

kmip/demos/utils.py

@@ -119,6 +119,8 @@ def build_cli_parser(operation):
             default=None,
             dest="length",
             help="Key length in bits (e.g., 128, 256)")
+    elif operation is Operation.QUERY:
+        pass
     elif operation is Operation.DISCOVER_VERSIONS:
         pass
     else: