Switch neutron-tempest-plugin-api job to be uwsgi based

Test of uwsgi based deployment is most important on the API
level, so this patch switches neutron-tempest-plugin-api job to
run neutron with uwsgi there.
Thanks to that we will also drop neutron-tempest-with-uwsgi
which is defined in the neutron repo from neutron CI queues.

Change-Id: If34ed0bd65a2eedae85894d80fb4f47eedef0165
diff --git a/zuul.d/master_jobs.yaml b/zuul.d/master_jobs.yaml
index 1c50b57..5325f67 100644
--- a/zuul.d/master_jobs.yaml
+++ b/zuul.d/master_jobs.yaml
@@ -84,6 +84,8 @@
       tempest_test_regex: ^neutron_tempest_plugin\.api
       devstack_services:
         neutron-log: true
+      devstack_localrc:
+        NEUTRON_DEPLOY_MOD_WSGI: true
       devstack_local_conf:
         post-config:
           # NOTE(slaweq): We can get rid of this hardcoded absolute path when