Disable Swift services in all scenario jobs

It should save some memory on the nodes.

Related-Bug: #1902516

Change-Id: I9f8386cc189974c0a0c800620cee4003b1899cf0
diff --git a/zuul.d/base.yaml b/zuul.d/base.yaml
index 77947fa..2bd6f5a 100644
--- a/zuul.d/base.yaml
+++ b/zuul.d/base.yaml
@@ -38,6 +38,11 @@
         neutron-tag-ports-during-bulk-creation: true
         br-ex-tcpdump: true
         br-int-flows: true
+        # We don't need Swift to be run in the Neutron jobs
+        s-account: false
+        s-container: false
+        s-object: false
+        s-proxy: false
       devstack_local_conf:
         post-config:
           $NEUTRON_CONF: