Uncomment tag import

Tags import was commented out by ruhe because it wasn't working;
whatever the problem was seems to be fixed now.

Change-Id: I64ee7131d1f90c13ca01c9ccdf1c0866eabb4aa4
Add basic reporting to engine

This patch adds reporting system to engine.
It is used in two major places
a) to report error to API when exception occurs
b) report service status reports to API via workflow as
- $this.find(std:Environment).reporter.report($this, 'Creating VM.')

Change-Id: I7310931482447e174114164ed921bb3fcbfb9d66
Merge "Uncomment tag import"
Merge "Add basic reporting to engine"