Enable SOL parameter test cases.

This change inclues:
    - Added keywords to set SOL parameter.
    - Added test cases to test SOL parameter.
    - Added keyword to restore SOL's default configuration
      after each test case.

Resolves openbmc/openbmc-test-automation#595

Change-Id: I437aa4eb87d5f55d799559dcd5943bd8fe88ae7f
Signed-off-by: Rahul Maheshwari <rahulmaheshwari@in.ibm.com>
2 files changed