Disable watcher from scenario004 until bug is fixed

Currently, watcher is not compatible with latest oslo.db [1]. Until it
is fixed, I am proposing to disable coverage in p-o-i to avoid it blocks
the rest of projects from promotion.

[1] https://bugs.launchpad.net/watcher/+bug/2056181

Change-Id: Id8cd5aa28933b6fe1399a3a7b30cc0e94e9fe45c

fixtures/scenario004.pp

@@ -78,7 +78,9 @@ class { 'openstack_integration::ceph':
 class { 'openstack_integration::horizon':
   octavia_enabled => true
 }
-include openstack_integration::watcher
+# TODO(tkajinam): Disabled due to
+# https://bugs.launchpad.net/watcher/+bug/2056181
+# include openstack_integration::watcher
 class { 'openstack_integration::manila':
   backend => 'cephfsnative'
 }
@@ -89,7 +91,9 @@ include openstack_integration::provision
 # Glance, nova, neutron are true by default.
 class { 'openstack_integration::tempest':
   horizon             => true,
-  watcher             => true,
+  # TODO(tkajinam): Disabled due to
+  # https://bugs.launchpad.net/watcher/+bug/2056181
+  # watcher             => true,
   vpnaas              => $vpnaas_enabled,
   taas                => $taas_enabled,
   bgpvpn              => $bgpvpn_enabled,