R2.2 - fix for Issue #24

Tested pull request https://github.com/eucalyptus/eucalyptus-sosreport-plugins/pull/26 to fix Issue https://github.com/eucalyptus/eucalyptus-sosreport-plugins/issues/24.  Results of test are as follows:

* on CLC/Walrus machine - eucacore, eucadb, and eucafrontend were enabled; eucaconsole was not enabled
* on CC/SC machine - eucacore was enabled; eucadb, eucaconsole, and eucafrontend were not enabled
* on NC machine - eucacore was enabled; eucadb, eucafrontend and eucaconsole were not enabled