opt in for neutron-lib consumption patches
opt in for neutron-lib consumption patches

As part of the Denver PTG [1] we decided networking related projects
that are "current" and want to receive neutron-lib consumption patches
on an on-going basis should indicate such with a well defined comment
in their requirements.txt. This allows us to easily find the list of
project to receive neutron-lib consumption patches [2] by searching for
the string.

In addition, projects opting-in for these patches are also attesting
they will stay up to date with TC and infra initiatives to ensure
consumption patches can flow freely.

This patch adds the "neutron-lib-current" string to requirements.txt
opting in for neutron-lib consumption patches.

[1] https://etherpad.openstack.org/p/neutron-stein-ptg
[2] https://docs.openstack.org/neutron-lib/latest/contributor/contributing.html#phase-4-consume

Change-Id: I7a2e538ad345d4a2d1cb398c3c325916f54df9e1

stackforge/neutron-powervm,stackforge/neutron-powervm,openstack/networking-powervm,openstack/networking-powervm