Bump rspec-puppet to 2.8.0

... as we no longer see any failures in the unit test jobs with
rspec-puppet 2.8.0.
The version used in "latest" is bumped to 2.9.0 which is the current
latest version.

Change-Id: Id8f0487e8ac0355fa51b4919614f9dcd2ed8b52a

zuul.d/base.yaml

@@ -137,9 +137,8 @@
       - ^setup.cfg$
       - ^setup.py$
       - ^tox.ini$
-    # TODO(tobias-urdin): Remove when we use rspec-puppet 2.7.1
     vars:
-      rspec_puppet_version: '~> 2.3.0'
+      rspec_puppet_version: '~> 2.8.0'
 
 - job:
     name: puppet-openstack-libraries-puppet-unit-base
@@ -164,6 +163,5 @@
       - ^setup.cfg$
       - ^setup.py$
       - ^tox.ini$
-    # TODO(tobias-urdin): Remove when we use rspec-puppet 2.7.1
     vars:
-      rspec_puppet_version: '~> 2.3.0'
+      rspec_puppet_version: '~> 2.8.0'

zuul.d/libraries.yaml

@@ -21,7 +21,7 @@
     nodeset: ubuntu-focal
     vars:
       puppet_gem_version: 6.21.1
-      rspec_puppet_version: '= 2.8.0'
+      rspec_puppet_version: '= 2.9.0'
 
 - job:
     name: puppet-openstack-libraries-puppet-unit-7.10-ubuntu-focal
@@ -29,7 +29,7 @@
     nodeset: ubuntu-focal
     vars:
       puppet_gem_version: 7.10.0
-      rspec_puppet_version: '= 2.8.0'
+      rspec_puppet_version: '= 2.9.0'
 
 - job:
     name: puppet-openstack-libraries-puppet-unit-latest-ubuntu-focal
@@ -38,4 +38,4 @@
     voting: false
     vars:
       puppet_gem_version: latest
-      rspec_puppet_version: '= 2.8.0'
+      rspec_puppet_version: '= 2.9.0'

zuul.d/unit.yaml

@@ -21,7 +21,7 @@
     nodeset: ubuntu-focal
     vars:
       puppet_gem_version: 6.21.1
-      rspec_puppet_version: '= 2.8.0'
+      rspec_puppet_version: '= 2.9.0'
 
 - job:
     name: puppet-openstack-unit-7.10-ubuntu-focal
@@ -29,7 +29,7 @@
     nodeset: ubuntu-focal
     vars:
       puppet_gem_version: 7.10.0
-      rspec_puppet_version: '= 2.8.0'
+      rspec_puppet_version: '= 2.9.0'
 
 - job:
     name: puppet-openstack-unit-latest-ubuntu-focal
@@ -38,7 +38,7 @@
     voting: false
     vars:
       puppet_gem_version: latest
-      rspec_puppet_version: '= 2.8.0'
+      rspec_puppet_version: '= 2.9.0'
 
 - project-template:
     name: puppet-openstack-module-unit-jobs