Modify the version_info in pbr

We'd better use 'kolla-ansible' instead of 'kolla'

Change-Id: I61b1939884b319fc7cd2fe7a7c615e88a72d7894

kolla/__init__.py

@@ -16,7 +16,7 @@ import pbr.version
 
 
 __version__ = pbr.version.VersionInfo(
-    'kolla').version_string()
+    'kolla-ansible').version_string()
 
 # Make a project global TLS trace storage repository
 TLS = threading.local()

kolla/version.py

@@ -12,4 +12,4 @@
 
 import pbr.version
 
-version_info = pbr.version.VersionInfo('kolla')
+version_info = pbr.version.VersionInfo('kolla-ansible')