Add Octavia tox "tips" jobs

This patch adds tox "tips" jobs to Octavia which checkout the master
branch of the dependent libraries (octavia-lib in the initial case).
Currently this runs the py37 unit tests and the py37 functional jobs.

Change-Id: Idc5dce9ed609e5bd268588f112637cab151c93bf

zuul.d/jobs.yaml

@@ -97,3 +97,32 @@
             load_balancer:
               enabled_provider_drivers: amphorav2:The v2 amphora driver.
               provider: amphorav2
+
+- project-template:
+    name: octavia-tox-tips
+    check:
+      jobs:
+        - octavia-tox-py37-tips
+        - octavia-tox-functional-py37-tips
+
+- job:
+    name: octavia-tox-py37-tips
+    parent: openstack-tox-py37
+    description: |
+      Run tox python 3.7 unit tests against master of related libraries.
+    vars:
+      tox_install_siblings: true
+      zuul_work_dir: src/opendev.org/openstack/octavia
+    required-projects:
+      - openstack/octavia-lib
+
+- job:
+    name: octavia-tox-functional-py37-tips
+    parent: openstack-tox-functional-py37
+    description: |
+      Run tox python 3.7 functional against master of related libraries.
+    vars:
+      tox_install_siblings: true
+      zuul_work_dir: src/opendev.org/openstack/octavia
+    required-projects:
+      - openstack/octavia-lib

zuul.d/projects.yaml

@@ -10,6 +10,7 @@
       - openstack-python3-train-jobs
       - publish-openstack-docs-pti
       - release-notes-jobs-python3
+      - octavia-tox-tips
     check:
       jobs:
         - openstack-tox-functional: