Add lower-constraints gate CI

Add lower-constraints gate CI

Change-Id: Ib2c9d67f96d37d5f85377dd41ef1e9378df35465

.zuul.yaml

@@ -1,7 +1,7 @@
 - project:
     templates:
       - check-requirements
-      # - openstack-lower-constraints-jobs
+      - openstack-lower-constraints-jobs
       - openstack-python3-wallaby-jobs
       - publish-openstack-docs-pti
       - release-notes-jobs-python3

lower-constraints.txt

@@ -2,7 +2,7 @@ alabaster==0.7.10
 appdirs==1.4.3
 APScheduler==3.0.5
 asn1crypto==0.24.0
-astroid==1.3.8
+astroid==2.4.0
 Babel==2.5.3
 bcrypt==3.1.4
 botocore==1.5.1
@@ -110,6 +110,6 @@ tzlocal==1.5.1
 unittest2==1.1.0
 urllib3==1.22
 voluptuous==0.11.1
-warlock==1.3.0
+warlock==1.3.3
 WebOb==1.7.4
-wrapt==1.10.11
+wrapt==1.11