Description of problem:

The python3-tap-as-a-service package installs the taas_plugin.ini file in /etc/neutron and create a symbolic link to the file in /usr/share/neutron/server .
However the link is named `taas_plugin.ini` and neutron-server ignores the file because it only loads "*.conf".

We should rename the link so that it's picked up by neutron-server.


Version-Release number of selected component (if applicable):
openstack-neutron-23.1.0-0.20240111194413.a89b5e5.el9.noarch
python3-tap-as-a-service-12.1.0-0.20231121221337.0d5d106.el9.noarch

How reproducible:
Always

Steps to Reproduce:
1. Install python3-tap-as-a-service
2. Enable the TaaS plugin
3. Start neutron-server

Actual results:
neutron-server fails to start because it does not load service_provide option in taas_plugin.ini

Expected results:
neutron-server loads taas_plugin.ini and starts without errors

Additional info:
This was initially found in the attempt to enable taas in [1]

[1] https://review.opendev.org/c/openstack/puppet-openstack-integration/+/906018