Tweak to new/redeploy HD discovery

Depending on if it's a blank Virtual HD or already partitioned, awk will hit on the disk designation on the 4th or 5th column.  Also may hit on multiple lines if already partitioned.  'head -1' grabs the first line and the awk command is changed to pull the last field.
Merge pull request #1 from jonschwenn/patch-1

Tweak to new/redeploy HD discovery