Add changes to BMC cleanup module

This commit adds minor changes to BMC cleanup module and moves the
keywords to a new file lib/bmc_cleanup.robot. This helps to import
lib/bmc_cleanup.robot and use these keywords wherever necessary.

Change-Id: I138548a8118a44ad33ec7789aaa55e1a333c744b
Signed-off-by: Sunil M <sunilmam@us.ibm.com>
2 files changed