Kuttl multinode: bump the timeout

It seems the test is timing out more often then not.
Let's try to see if the execution time is the only issue.

Author: tosky

zuul.d/kuttl_multinode.yaml

@@ -52,6 +52,7 @@
 - job:
     name: cifmw-multinode-kuttl
     parent: cifmw-base-multinode-kuttl
+    timeout: 9000
     files:
       - ^ci/playbooks/kuttl/.*
       - ^scenarios/centos-9/kuttl.yml