Use openstack-python-jobs to run pep8 and py27 test

1. Use openstack-python-jobs template to run pep8 and py27[1]
2. Add the license info for requirements.txt

[1]: refer to https://docs.openstack.org/infra/openstack-zuul-jobs/project-templates.html#

Change-Id: I7612fa970a82b3ed16ab88ace82af4fcfabfc1a7

.zuul.yaml

@@ -39,18 +39,15 @@
 - project:
     templates:
         - openstack-cover-jobs
+        - openstack-python-jobs
         - openstack-python3-train-jobs
     check:
       jobs:
-        - openstack-tox-pep8
-        - openstack-tox-py27
         - kollacli-tox-mypy
         - kollacli-tox-functional
         - kollacli-tox-functional-py36
     gate:
       jobs:
-        - openstack-tox-pep8
-        - openstack-tox-py27
         - kollacli-tox-mypy
         - kollacli-tox-functional
         - kollacli-tox-functional-py36

requirements.txt

@@ -1,9 +1,9 @@
-Babel>=0.9.6
-cliff>=1.13.0  # Apache-2.0
-cliff-tablib<=1.1
-jsonpickle>=0.9
-oslo.i18n>=1.3.0  # Apache-2.0
-paramiko>=1.15
-pbr!=2.1.0,>=2.0.0
-six>=1.10.0
-docker>=2.4.2
+Babel>=0.9.6 # BSD
+cliff>=1.13.0 # Apache-2.0
+cliff-tablib<=1.1 # Apache-2.0
+jsonpickle>=0.9 # BSD
+oslo.i18n>=1.3.0 # Apache-2.0
+paramiko>=1.15 # LGPL
+pbr!=2.1.0,>=2.0.0 # Apache-2.0
+six>=1.10.0 # MIT
+docker>=2.4.2 # Apache-2.0