Add linter jobs for releases file script

This review adds a pep8 jobs to be triggered
with changes to the releases script files.
pylint was considered but removed from this
initial review.

Change-Id: Ib8809c94d99ccb1ecafa94b3791f613c35dbd9ef

scripts/emit_releases_file/emit_releases_file.py

@@ -8,6 +8,7 @@ import yaml
 
 # Define releases
 RELEASES = ['newton', 'ocata', 'pike', 'queens', 'master']
+# Define long term releases
 LONG_TERM_SUPPORT_RELEASES = ['queens']
 
 

scripts/emit_releases_file/test_get_dlrn_hash.py

@@ -3,6 +3,7 @@ from emit_releases_file import get_dlrn_hash
 import mock
 import pytest
 
+
 @mock.patch('requests.get')
 def test_get_dlrn_hash(mock_get):
     mock_response = mock.Mock()