Improvements in pipeline-library: [minionsPresent]

* Replacing 10hr sleep with event based check for minions check
* Fixing minionsPresent function
  - wrong description
  - put a note that it uses an assumtion to get list from compound
  - fixing self object call (target should be master no pepperenv)
  - fixing inacurate function calls within minionsPresent function
* Addinf minionsPresentFromList function
  - it uses array to get list of minions
  - it does not truncate fqdn to shortname

Change-Id: Ida8d7ee4f0e1f42988c89486d1212b634217d4dd
2 files changed