switch to the newly created opensuse-15 nodeset

opensuse-150 nodeset is referring to openSUSE 15.0, which is still in
maintenance but openSUSE 15.1 has been released already. "opensuse-15"
is going to refer to the "latest openSUSE 15.x" build released and
working for OpenStack going forward, so add this nodeset and use
it by default going forward.

This is the remaining work to be done after https://review.opendev.org/#/c/667539
got merged earlier

Change-Id: I3c0e14c606c88b5deecfad71bc156e53335d543e
diff --git a/.zuul.yaml b/.zuul.yaml
index d893483..191d407 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -345,8 +345,16 @@
     parent: tempest-full-py3
     nodeset: devstack-single-node-opensuse-150
     description: |
+      ** DEPRECATED - please use tempest-full-py3-opensuse15 instead.
+    voting: false
+
+- job:
+    name: tempest-full-py3-opensuse15
+    parent: tempest-full-py3
+    nodeset: devstack-single-node-opensuse-15
+    description: |
       Base integration test with Neutron networking and py36 running
-      on openSUSE Leap 15.0
+      on openSUSE Leap 15.x
     voting: false
 
 - job:
@@ -727,7 +735,7 @@
             irrelevant-files: *tempest-irrelevant-files
         - tempest-pg-full:
             irrelevant-files: *tempest-irrelevant-files
-        - tempest-full-py3-opensuse150:
+        - tempest-full-py3-opensuse15:
             irrelevant-files: *tempest-irrelevant-files
     periodic-stable:
       jobs: