PFW: Add a command to delete all domains

BZ: 42432

This command is useful to reset all PFW settings.
Signed-off-by: Kevin Rocard <kevinx.rocard@intel.com>

Change-Id: I23b74c45205739aeca71278979699b6b88f3111e
Reviewed-on: http://android.intel.com:8080/53332
Reviewed-by: De Chivre, Renaud <renaud.de.chivre@intel.com>
Tested-by: Mendi, EduardoX <eduardox.mendi@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>
4 files changed