Delete unused neutron port

For purpose of creating fake baremetal nodes environment for ironic
functional/integration testing the unused neutron port to be created.
Adding the removal part and helpful comments.

Change-Id: I855ba1dbbf13f343d513ba387716996d6e4c20a6
Prevent the use of 'swift' in ENABLED_SERVICES

This is not supported and we missed a comment in stackrc that still
said otherwise.  Fix the comment and abort in the sanity check section
if 'swift' is detected in ENABLED_SERVICES.

Change-Id: I78222d7ee2ea8a281962129d5bcf06c118469510
Merge "Prevent the use of 'swift' in ENABLED_SERVICES"
Merge "Delete unused neutron port"