Fix issues with job replacement

Do not exit with error if the revision does not match, as retrying will not help, and trap TERM/INT to avoid interrupting helm while it is working

Signed-off-by: Brad Davidson <brad.davidson@rancher.com>

Author: brandond

entry

@@ -134,10 +134,13 @@ check_revision() {
   if [[ -n "${EXPECTED_RELEASE_REVISION}" ]] && [[ "${EXPECTED_RELEASE_REVISION}" != "${REVISION}" ]]; then
     echo "Current release revision ${REVISION} does not match expected revision ${EXPECTED_RELEASE_REVISION}" >> ${TERM_LOG}
     echo "Current release revision ${REVISION} does not match expected revision ${EXPECTED_RELEASE_REVISION}"
-    exit 64
+    exit
   fi
 }
 
+# do not interrupt helm while it is running, or it will likely leave the release in a pending state
+trap "" SIGINT SIGTERM
+
 export CA_FILE=/config/ca-file.pem
 export CA_DIR=/ca-files
 export AUTH_DIR=/auth