Addresses code review comments from @richbrowne
Addresses code review comments from @richbrowne

Fixes: PR #22

Problem: Code review comments suggest some fields need to be removed
from the f5_ve_standalone_2_nic heat file

Analysis: This file was used as the master for changes to other files
and it was forgotten about. Have removed the necessary fields.

Unit/Robot tests:

F5Networks/f5-openstack-heat