Unhardcode parameters for rocky and queens

timeout_nbd and heal_instance_info_cache_interval were available
for configuration in pike so should be available and in later
releases.

Change-Id: I3bf9bcde5f60761826926d5a6e00893980925681
Related-Prod: https://mirantis.jira.com/browse/PROD-27288
diff --git a/tests/pillar/compute_cluster.sls b/tests/pillar/compute_cluster.sls
index 7c79c8a..378de4f 100644
--- a/tests/pillar/compute_cluster.sls
+++ b/tests/pillar/compute_cluster.sls
@@ -7,6 +7,7 @@
       mount_points:
       - path: /mnt/hugepages_1GB
     disk_cachemodes: network=writeback,block=none
+    timeout_nbd: 10
     heal_instance_info_cache_interval: 60
     vncproxy_url: openstack:6080
     report_interval: 60