Initialize natMode.
Initialize natMode.

- Forgot to initialize the new natMode boolean.

Change-Id: I254d8f180deef5d4e8be3ecc3162d7ea1d0eb52d
Signed-off-by: Madhu Challa <a5b616c3796039270c0a077df6257cb57af1aecc@gmail.com>

opendaylight/opflex,opendaylight/opflex,opendaylight/opflex,opendaylight/opflex