Integration test for the Cancel And Resume

Implement the integration test for the Cancel and Resume scenario.

tests/integration/example.test.env.yaml

@@ -22,7 +22,7 @@ testdata:
     module: testmodule
     # Branch which is going to be built for this test.
     branch: scratch-build-branch
-failed_build:
+  failed_build:
     module: testmodule
     branch: failed-build-branch
     # Batch considered by this test.
@@ -40,3 +40,6 @@ failed_build:
     buildorder: [{"module-build-macros"}, {"attr"}, {"acl"}]
     # True if buildrequire a Platform stream representing a GA RHEL release
     platform_is_ga: true
+  resume_cancelled_build:
+    module: testmodule
+    branch: cancel-build-branch