XYZ network: Configuring gateway address

This change includes:
    GOOD PATH test cases:
    1. Configuring IP address without gateway.
    2. Configuring IP address with valid gateway.
    BAD PATH test cases:
    3. Configuring invalid address for gateway.
    4. Configuring broadcast address for gateway.
    5. Configuring loopback address for gateway.
    6. Configuring multicast address for gateway.
    7. Configuring 3 octet address for gateway.

This reolves openbmc/openbmc-test-automation#782

Change-Id: I0e7789afe0131e0149e34c02d1259379c41e3fef
Signed-off-by: Prashanth Katti <prkatti1@in.ibm.com>
1 file changed