CA-151444: Update verification form to extend support for alternative
multipath configurations.

Added a (Test: XC.MultiPath - optional) section to the test report and
improved documentation.

Signed-off-by: Siddharth Vinothkumar <siddharth.vinothkumar@citrix.com>
CA-151444: Update xencert guide to help extend support for alternative
multipath configurations.

Signed-off-by: Siddharth Vinothkumar <siddharth.vinothkumar@citrix.com>