dynamic action description

Add a new table to save the mapping
Add logic to update the table when action loading
Add logic to show the action description

Change-Id: Ia008a8715bcc666ab0fefe444ef612394c775e91
Implements: blueprint dynamic-action-description

watcher/cmd/applier.py

@@ -23,6 +23,7 @@ import sys
 from oslo_log import log as logging
 
 from watcher.applier import manager
+from watcher.applier import sync
 from watcher.common import service as watcher_service
 from watcher import conf
 
@@ -37,6 +38,9 @@ def main():
 
     applier_service = watcher_service.Service(manager.ApplierManager)
 
+    syncer = sync.Syncer()
+    syncer.sync()
+
     # Only 1 process
     launcher = watcher_service.launch(CONF, applier_service)
     launcher.wait()