[FIXES JENKINS-11673] - Support https in RPM service scripts

Adding support for --httpsKeyStore and --httpsKeyStorePassword agruments.
Follows guide at https://wiki.jenkins-ci.org/display/JENKINS/Starting+and+Accessing+Jenkins
Merge pull request #1227 from n8felton/JENKINS-11673

[FIXES JENKINS-11673] - Support https in RPM service scripts