Convert etcd role config script to a Pythonic CLI

This makes it a class that can be run and is listed in setup.cfg.

It does not change its functionality.

Change-Id: I586ca48a4d4de1756051575a999696a9a5f0f0b2

networking_vpp/tools/etcd_role_conf.py

@@ -15,13 +15,14 @@
 #    under the License.
 
 import click
-import jsonutils
 import os
 import subprocess
 import sys
 
 from networking_vpp._i18n import _
 
+from oslo_serialization import jsonutils
+
 
 ETCDCTL_PATH = "etcdctl"
 ENDPOINT = None
@@ -217,6 +218,10 @@ def run_checks():
         sys.exit(3)
 
 
-if __name__ == '__main__':
+def main():
     run_checks()
     etcdctl()
+
+
+if __name__ == '__main__':
+    main()

setup.cfg

@@ -37,6 +37,7 @@ console_scripts =
     vpp-check-etcd = networking_vpp.tools.test_etcd_content:main
     vpp-check-vpp = networking_vpp.tools.test_vpp_content:main
     vpp-watch-etcd = networking_vpp.tools.watch_changes:main
+    vpp-etcd-role-conf = networking_vpp.tools.etcd_role_conf:main
 neutron.ml2.mechanism_drivers =
     vpp = networking_vpp.mech_vpp:VPPMechanismDriver
 neutron.db.alembic_migrations =