test against sles 15 GCP

Author: LukasAud

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
 
   Acceptance:
     needs: Spec
-    uses: "puppetlabs/cat-github-actions/.github/workflows/module_acceptance.yml@MAINT-GCP_troubleshooting"
+    uses: "puppetlabs/cat-github-actions/.github/workflows/module_acceptance.yml@main"
     secrets: "inherit"
     with:
-      flags: "--nightly --platform-include=sles-12"
+      flags: "--nightly --platform-include=sles-15"

provision.yaml

@@ -32,10 +32,6 @@ docker_el8:
   provisioner: docker
   images:
   - litmusimage/centos:8
-docker_sles:
-  provisioner: docker
-  images:
-  - litmusimage/sles:15
 release_checks_6:
   provisioner: abs
   images: