cluster/kube: emergency fixes after evition

Some pods got evicted. Some of them broke.

  - postgres in matrix and nginx in internet because of the new policies
    (chown issues)
  - cas proxy in matrix because apparently the image was not reuploaded
    to the regsitry after ceph-waw1 died, and another node didn't have it
  - registry because it had a weak image pin an downgraded to some
    broken version on another node

Change-Id: I836036872629843c8ede1b7f67982112c90d71f0
diff --git a/cluster/kube/cluster.jsonnet b/cluster/kube/cluster.jsonnet
index 89ffdb0..09c3b33 100644
--- a/cluster/kube/cluster.jsonnet
+++ b/cluster/kube/cluster.jsonnet
@@ -135,6 +135,9 @@
         policies.AllowNamespaceInsecure("kube-system"),
         # TODO(q3k): fix this?
         policies.AllowNamespaceInsecure("ceph-waw2"),
+        policies.AllowNamespaceInsecure("matrix"),
+        policies.AllowNamespaceInsecure("registry"),
+        policies.AllowNamespaceInsecure("internet"),
     ],
 
     // Allow all service accounts (thus all controllers) to create secure pods.