Suppress : Stringop Overflow warning during build time

- gcc complains about the following warning during a build
  and as -Werror is enforced, it is treated as an error which
  is resulting in a build failure.

- error: ‘strncpy’ specified bound depends on the length of
  the source argument [-Werror=stringop-overflow=]

- There are couple of workarounds that were discussed in this
  commit, but at the moment we thought the best option to move
  forward is to suppress the warning until we know a concrete
  solution for this problem. Once we fix it , we can enforce the
  warning again.

Tested By:
- bmcweb compiled without any warning or error.

Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
Change-Id: I36c595ab610523c8d50833cab0fdd20c509a8a2a