Added tests to verify VPD for assembly component
Added tests to verify VPD for assembly component

Test cases added:
    - Verify TPM VPD Data Via Redfish
    - Verify TOD Battery VPD Data Via Redfish
    - Verify VRM VPD Data Via Redfish
    - Verify OP Panel VPD Data Via Redfish
    - Verify OP Panel LCD VPD Data Via Redfish
    - Verify Disk Backplane VPD Data Via Redfish

Change-Id: Id074128d9e2dd6e322c9abc13a94e9d1bbba8673
Signed-off-by: Rahul Maheshwari <a806e6fd77e56dd64ff6084a06bbf3a5a70392ef@in.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation