uniform error messages for e2e test

Author: gkech

e2e-tests/init-deploy/run

@@ -76,7 +76,7 @@ compare_mongo_cmd "find" "myApp:myPass@$cluster-2.$cluster.$namespace"
 desc 'check number of connections'
 conn_count=$(run_mongo 'db.serverStatus().connections.current' "clusterAdmin:clusterAdmin123456@$cluster.$namespace" | egrep -v 'I NETWORK|W NETWORK|Error saving history file|Percona Server for MongoDB|connecting to:|Unable to reach primary for set|Implicit session:|versions do not match|bye')
 if [ ${conn_count} -gt ${max_conn} ]; then
-	echo "ERROR: Connection count (${conn_count}) exceeds maximum allowed (${max_conn})"
+	echo "error: connection count (${conn_count}) exceeds maximum allowed (${max_conn})"
 	exit 1
 fi