Remove obsolete warning about concurrent executions

 Remove warning about unparameterized --display as it is
 now parameterized (this commit is a follow-up to comments
 in already merged https://gerrit.onap.org/r/#/c/87357/)

 Added also brackets for namespace parameter in usage guide

Change-Id: I78a753b026e3e9b410798687b28ad0ca1115703e
Issue-ID: OOM-1844
Signed-off-by: kaihlavi <l.kaihlavirt@partner.samsung.com>
diff --git a/kubernetes/robot/eteHelm-k8s.sh b/kubernetes/robot/eteHelm-k8s.sh
index 6fcf984..c58d8a8 100755
--- a/kubernetes/robot/eteHelm-k8s.sh
+++ b/kubernetes/robot/eteHelm-k8s.sh
@@ -15,12 +15,11 @@
 #!/bin/bash
 
 #
-# Run the health-check testsuites for the tags discovered by helm list 
+# Run the health-check testsuites for the tags discovered by helm list
 # Please clean up logs when you are done...
-# Note: Do not run multiple concurrent eteHelm-k8s.sh as the --display is not parameterized and tests will collide
 #
 if [ "$1" == "" ] ;  then
-   echo "Usage: eteHelm-k8s.sh namespace"
+   echo "Usage: eteHelm-k8s.sh [namespace]"
    echo " list projects via helm list and runs health-check with those tags except dev and dev-consul"
    exit
 fi