fix according to copilot, one bug, one comment

Author: torcolvin

.github/workflows/shell.yml

@@ -22,7 +22,7 @@ on:
       - 'CBG*'
       - 'ci-*'
   pull_request:
-    # Only run when we change an API spec
+    # Only run when we change a shell script
     paths:
       - '*.sh'
     branches:

jenkins-integration-build.sh

@@ -91,7 +91,7 @@ else
 fi
 
 if [ "${DETECT_RACES:-}" == "true" ]; then
-    GO_TEST_FLAGS=(-race)
+    GO_TEST_FLAGS+=(-race)
 fi
 
 if [ "${FAIL_FAST:-}" == "true" ]; then