Fix deployment of the neutron with uwsgi

After patch [1] deploying neutron with uwsgi was not working correctly
due to the fact that there was different paths for the applications
set in the api-paste.ini file. Instead of default ones like:

/: neutronversions_composite
/healthcheck: healthcheck
/v2.0: neutronapi_v2_0

it was changing it to something like:

/networking/: neutronversions_composite
/networking/healthcheck: healthcheck
/networking/v2.0: neutronapi_v2_0

where 'networking' can be configured to something else.
This patch fixes deployment of neutron with uwsgi by not changing its
api-paste.ini file when NEUTRON_DEPLOY_MOD_WSGI=True.

[1] https://review.opendev.org/c/openstack/devstack/+/849145

Closes-bug: #2069418
Change-Id: I12b860d4d98442e2b5ac0c9fd854f1226633b518

Author: slawqo

lib/neutron

@@ -1002,7 +1002,7 @@ function _configure_neutron_service {
     Q_API_PASTE_FILE=$NEUTRON_CONF_DIR/api-paste.ini
     cp $NEUTRON_DIR/etc/api-paste.ini $Q_API_PASTE_FILE
 
-    if [[ -n "$NEUTRON_ENDPOINT_SERVICE_NAME" ]]; then
+    if [[ "$NEUTRON_DEPLOY_MOD_WSGI" == "False" && -n "$NEUTRON_ENDPOINT_SERVICE_NAME" ]]; then
         _replace_api_paste_composite
     fi