fix test assert for openshift

Author: adwk67

tests/templates/kuttl/opa-authorization/50-assert.yaml

@@ -3,5 +3,7 @@ apiVersion: kuttl.dev/v1beta1
 kind: TestAssert
 timeout: 300
 commands:
-  # Check that a graceful shutdown was triggered (it needs OPA permissions)
-  - script: 'kubectl -n $NAMESPACE logs trino-worker-default-0 | grep -P "io.trino.server.NodeStateManager[\h]*Shutdown requested"'
+  # Check that a graceful shutdown was triggered (it needs OPA permissions).
+  # Strip ANSI colour codes first: on OpenShift the container runtime sets TERM=xterm, so Trino
+  # colourises its logs and the escape sequences would otherwise break the grep pattern below.
+  - script: 'kubectl -n $NAMESPACE logs trino-worker-default-0 | sed "s/\x1b\[[0-9;]*m//g" | grep -P "io.trino.server.NodeStateManager[\h]*Shutdown requested"'