add master node taint and tolerances for pods to run on masters

Does not depend on host node labels.

Change-Id: I6c834a62f92bf508f60eb24c74a19dec47d5e44c
diff --git a/metadata/service/master/single.yml b/metadata/service/master/single.yml
index 3a6440c..d9d24a1 100644
--- a/metadata/service/master/single.yml
+++ b/metadata/service/master/single.yml
@@ -7,8 +7,11 @@
   kubernetes:
     master:
       enabled: true
+      unschedulable: false
       registry:
         host: tcpcloud
+      host:
+        name: ${linux:system:name}
       service_addresses: 10.254.0.0/16
       admin:
         username: ${_param:kubernetes_admin_user}