zuul: Use all rather than all-plugin for tox_envlist

Since 'all-plugin' is deprecated in Tempest, this is to
switch to 'all' instead in .zuul.yaml; for more info,
see: https://github.com/openstack/tempest/blob/9b4c50cf634cbea6e6a7353fff14c2f0a7ab1aa2/tox.ini#L64

Depends-On: Ib3264f54075216471720483c8dd816887c1f413c
Change-Id: I440b6cff2b5378e18304017589e3e7cf4748c28c
diff --git a/.zuul.yaml b/.zuul.yaml
index 9ee33cf..edd812c 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -31,7 +31,8 @@
         neutron-trunk: true
       tempest_concurrency: 2
       tempest_test_regex: (?!.*\[.*\bslow\b.*\])(^patrole_tempest_plugin\.tests\.api)
-      tox_envlist: all-plugin
+      tox_envlist: all
+      tox_extra_args: --sitepackages
 
 - job:
     name: patrole-base-multinode
@@ -60,7 +61,8 @@
         neutron: true
       tempest_concurrency: 1
       tempest_test_regex: (?=.*\[.*\bslow\b.*\])(^patrole_tempest_plugin\.tests\.api)
-      tox_envlist: all-plugin
+      tox_envlist: all
+      tox_extra_args: --sitepackages
 
 - job:
     name: patrole-admin