ci: use schematics for catalog pipeline validation and remove migration scripts (#959)

Author: ocofaigh

.catalog-onboard-pipeline.yaml

@@ -10,18 +10,18 @@ offerings:
       - name: quickstart
         mark_ready: false
         install_type: fullstack
-        validation_type: projects # projects validation required when ansible migration script present in code
+        validation_type: schematics
       - name: standard
         mark_ready: false
         install_type: fullstack
-        validation_type: projects # projects validation required when ansible migration script present in code
+        validation_type: schematics
         scc:
           instance_id: 1c7d5f78-9262-44c3-b779-b28fe4d88c37
           region: us-south
       - name: existing-vpc
         mark_ready: false
         install_type: extension
-        validation_type: projects # projects validation required when ansible migration script present in code
+        validation_type: schematics
         pre_validation: "tests/scripts/pre-validation-deploy-slz-vpc.sh"
         post_validation: "tests/scripts/post-validation-destroy-slz-vpc.sh"
         scc:
@@ -49,11 +49,11 @@ offerings:
       - name: standard
         mark_ready: false
         install_type: fullstack
-        validation_type: projects # projects validation required when ansible migration script present in code
+        validation_type: schematics
         scc:
           instance_id: 1c7d5f78-9262-44c3-b779-b28fe4d88c37
           region: us-south
       - name: quickstart
         mark_ready: false
         install_type: fullstack
-        validation_type: projects # projects validation required when ansible migration script present in code
+        validation_type: schematics