Add ability to ignore deployed machines in wait_for_ready state

Fixes: PROD-33758

Change-Id: I9ada6415ead91fa5e9bc9c0ff7422f61e16ecd03
diff --git a/tests/pillar/maas_region.sls b/tests/pillar/maas_region.sls
index e482b61..53e249f 100644
--- a/tests/pillar/maas_region.sls
+++ b/tests/pillar/maas_region.sls
@@ -39,3 +39,4 @@
       deployed: 900
       ready: 900
       attempts: 2
+    ignore_deployed_machines: true