Adding support for BMC Power On/BMC Power Off

This change includes the following new keywords:
  BMC Power On
  Check Power On States
  BMC Power Off
  Check Power Off States
  Get BMC State
  Get Power State

It also includes modifications to the following keywods:
  Is Power On
  Is Power Off
  Wait For Host To Ping
  Check OS
  Open Connection and Log In

A variable definition has been added to resource.txt and a
file to keep track of DVT's resource files has been created.

Change-Id: Idc81be7e2dfb21c35bc51214f8650a10d8481120
Signed-off-by: Leah McNutt <lmcnutt@us.ibm.com>
8 files changed