Cobbler managment refactoring

Move all high level cobbler logics from orchestrator
to the new special class.

Change-Id: Id5e9ef54e1d43e6c44d14e75cd27640e19aaeb29
Refactoring post deploy action

Move post deploy things from orchestrator to specail classes

Change-Id: I0998e04ca56ea5da438fe36d0bf13db02921fd9f