SEBA-730 Fix atests for recent Helm chart changes

Change-Id: I5d8d5a66d2c81fa3a0f3893b4453a94f6fc31e89
diff --git a/tests/atests/common/testCaseUtils.py b/tests/atests/common/testCaseUtils.py
index 1fe4f82..9b9b67d 100755
--- a/tests/atests/common/testCaseUtils.py
+++ b/tests/atests/common/testCaseUtils.py
@@ -171,4 +171,4 @@
 
 
 def discover_rg_pod_name():
-    return extract_pod_name('rg-').strip()
+    return extract_pod_name('rg0').strip()