gluster: BLL Cmd for stop remove brick async task

BLL Cmd for stop remove brick async task

Change-Id: If05f54aa86bcc8ceb10fd2925a6e1fce8e905b6a
Signed-off-by: Shubhendu Tripathi <shtripat@redhat.com>
Signed-off-by: Kanagaraj M <kmayilsa@redhat.com>