Changes for zuulv3

This patch adds the gate jobs for this repo to this repo.  It also
switches from running py35 unit tests to running py36/37 unit tests.

Change-Id: Iee58de2768962fa27d11b513b1462f2d9c2a277d

zuul.d/project.yaml

@@ -0,0 +1,6 @@
+- project:
+    name: openstack/python-dracclient
+    templates:
+      - openstack-python-jobs
+      - openstack-python3-train-jobs
+      - publish-to-pypi