Fixing sonar issues in whole file
https://sonar.onap.org/code?id=org.onap.appc%3Aappc&selected=org.onap.appc%3Aappc-dg-util-bundle%3Asrc%2Fmain%2Fjava%2Forg%2Fonap%2Fappc%2Fdg%2Futil%2Fimpl%2FExecuteNodeActionImpl.java