Add nodedefine command

Provide a quick command to define new nodes to confluent direct
from cli without confetty.

confluent_client/bin/nodedefine

@@ -0,0 +1,57 @@
+#!/usr/bin/env python
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2017 Lenovo
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import optparse
+import os
+import signal
+import sys
+
+try:
+    signal.signal(signal.SIGPIPE, signal.SIG_DFL)
+except AttributeError:
+    pass
+
+path = os.path.dirname(os.path.realpath(__file__))
+path = os.path.realpath(os.path.join(path, '..', 'lib', 'python'))
+if path.startswith('/opt'):
+    sys.path.append(path)
+
+import confluent.client as client
+
+argparser = optparse.OptionParser(
+    usage='''\n       %prog noderange attribute1=value1 attribute2=value,...
+             \n ''')
+(options, args) = argparser.parse_args()
+requestargs=None
+try:
+    noderange = args[0]
+except IndexError:
+    argparser.print_help()
+    sys.exit(1)
+session = client.Command()
+exitcode = 0
+attribs = {'name': noderange}
+for arg in args[1:]:
+    key, val = arg.split('=')
+    attribs[key] = val
+for r in session.create('/noderange/', attribs):
+    if 'error' in r:
+        sys.stderr.write(r['error'] + '\n')
+        exitcode |= 1
+    if 'created' in r:
+        print('{0}: created'.format(r['created']))
+sys.exit(exitcode)