Add dots at first line in docstring

Running flake tests raises warning for:
"First line should end with a period"

Change-Id: I9714b350900500c997ef0e54e9830e232fcd6ce7

kolla/exception.py

@@ -10,7 +10,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-"""Kolla exception subclasses"""
+"""Kolla exception subclasses."""
 
 
 class KollaDirNotFoundException(Exception):

kolla/image/build.py

@@ -645,7 +645,7 @@ class KollaWorker(object):
             )
 
     def setup_working_dir(self):
-        """Creates a working directory for use while building"""
+        """Creates a working directory for use while building."""
         if self.conf.work_dir:
             self.working_dir = os.path.join(self.conf.work_dir, 'docker')
         else:
@@ -673,7 +673,7 @@ class KollaWorker(object):
         return filters
 
     def _get_methods(self):
-        """Mapping of available Jinja methods
+        """Mapping of available Jinja methods.
 
         return a dictionary that maps available function names and their
         corresponding python methods to make them available in jinja templates
@@ -758,7 +758,7 @@ class KollaWorker(object):
         return {tpl_name: tpl_content}
 
     def find_dockerfiles(self):
-        """Recursive search for Dockerfiles in the working directory"""
+        """Recursive search for Dockerfiles in the working directory."""
         self.docker_build_paths = list()
         path = self.working_dir
         filename = 'Dockerfile.j2'
@@ -771,12 +771,12 @@ class KollaWorker(object):
         LOG.debug('Found %d Dockerfiles', len(self.docker_build_paths))
 
     def cleanup(self):
-        """Remove temp files"""
+        """Remove temp files."""
         if not self.conf.work_dir:
             shutil.rmtree(self.temp_dir)
 
     def filter_images(self):
-        """Filter which images to build"""
+        """Filter which images to build."""
         filter_ = list()
 
         if self.regex:
@@ -816,7 +816,7 @@ class KollaWorker(object):
                 image.status = STATUS_MATCHED
 
     def summary(self):
-        """Walk the dictionary of images statuses and print results"""
+        """Walk the dictionary of images statuses and print results."""
         # For debug we print the logs again if the image error'd. This is to
         # help us debug and it will be extra helpful in the gate.
         for image in self.images:
@@ -1025,7 +1025,7 @@ class KollaWorker(object):
         pprint.pprint(ancestry)
 
     def find_parents(self):
-        """Associate all images with parents and children"""
+        """Associate all images with parents and children."""
         sort_images = dict()
 
         for image in self.images:
@@ -1038,7 +1038,7 @@ class KollaWorker(object):
                     image.parent = parent
 
     def build_queue(self, push_queue):
-        """Organizes Queue list
+        """Organizes Queue list.
 
         Return a list of Queues that have been organized into a hierarchy
         based on dependencies

kolla/template/methods.py

@@ -14,7 +14,7 @@
 
 
 def debian_package_install(packages):
-    """Jinja utility method for building debian-based package install command
+    """Jinja utility method for building debian-based package install command.
 
     apt-get is not capable of installing .deb files from a URL and the
     template logic to construct a series of steps to install regular packages