TripleO: Switch to scenario 013

scenario 013 is more light-weighted as it does not have Ceph.

Conflicts:
	.zuul.yaml

Backport note:
This is directly backported from master because TripleO jobs have been
removed from xena and yoga.

Change-Id: I00af2b7c528f93b0f29f053f47f892693e3a947e
(cherry picked from commit ec3d4a7731)

.zuul.yaml

@@ -34,8 +34,6 @@
       - name: peers
         nodes: []
 
-# redefine tripleo-ci-centos-8-scenario010-standalone with tripleo-puppet-ci
-# job as its base.
 - job:
     name: puppet-octavia-tripleo-standalone
     parent: tripleo-puppet-ci-centos-8-standalone
@@ -49,8 +47,6 @@
         - standalone
         - octavia
         - nested-virt
-      featureset: '062'
-      standalone_ceph: true
       featureset_override:
         run_tempest: false
         tempest_test_whitelist:
@@ -62,7 +58,7 @@
         validate_services: false
         standalone_environment_files:
           - 'environments/low-memory-usage.yaml'
-          - 'ci/environments/scenario010-standalone.yaml'
+          - 'ci/environments/scenario013-standalone.yaml'
           - 'ci/environments/octavia-kvm.yaml'
 
 - job:
@@ -72,4 +68,4 @@
     description: |
       TripleO standalone Job running Octavia specific Tempest tests.
     voting: false
-    vars: *standalone_vars
+    vars: *standalone_vars