XYZ network: Prefix length and threshold IP configuration

This change includes:
    GOOD PATH test cases:
    1. First, second, third and fourth octet threshold configuration.
    2. Verify default gateway.
    3. Verify hostname.
    BAD PATH test cases:
    4. Out-of-range prefix length.
    5. String value as prefix length.
    6. Negative value as prefix length.

This reolves openbmc/openbmc-test-automation#801

Change-Id: I974f480ab63ba9c624d856c068ec1ef2df973472
Signed-off-by: Prashanth Katti <prkatti1@in.ibm.com>
2 files changed