[VOL-5180] - installVolthaStack: enhance polling loop

vars/volthaStackDeploy.groovy
-----------------------------
  o Add more cluster state detection for Error.
  o Fail hard and noisy when detected.

Change-Id: I76328ba670653dde802f6152f37a1f19c5e357b4
diff --git a/jjb/voltha-e2e/voltha-2.8.yaml b/jjb/voltha-e2e/voltha-2.8.yaml
index 994a79d..912e530 100644
--- a/jjb/voltha-e2e/voltha-2.8.yaml
+++ b/jjb/voltha-e2e/voltha-2.8.yaml
@@ -30,7 +30,7 @@
           code-branch: 'voltha-2.8'
           extraHelmFlags: '--set kafka.externalAccess.enabled=true,kafka.externalAccess.service.type=NodePort,kafka.externalAccess.service.nodePorts[0]=30201,kafka.externalAccess.service.domain=127.0.0.1'
           time-trigger: "H H/23 * * *"
-          logLevel: 'DEBUG'
+          logLevel: 'INFO'
           testTargets: |
             - target: voltha-pm-data-single-kind-att
               workflow: att