OWLS-94991 - Increase default sleep interval and provide option to override the value in startServer.sh to avoid high cpu usage.

Author: ankedia

operator/src/main/resources/scripts/utils.sh

@@ -548,7 +548,9 @@ function waitForShutdownMarker() {
     if [ -e ${SHUTDOWN_MARKER_FILE} ] ; then
       exit 0
     fi
-    sleep 0.1
+    # Set the SERVER_SLEEP_INTERVAL_SECONDS environment variable in the domain specs to
+    # override the default sleep interval value of 1 second.
+    sleep ${SERVER_SLEEP_INTERVAL_SECONDS:-1}
   done
 }