Merge branch 'ticket/2.7.x/15797_redhat_chkconfig' into 2.7.x

• ticket/2.7.x/15797_redhat_chkconfig: (#15797) Disable RedHat services in all run levels (Maint) Whitespace only cleanup (#15797) Add test coverage for redhat service provider (#15797) Change the argument to chkconfig from 'on' to 'reset'