chore: Only pick one pod for executing psql in test

appLabel=$1

dbLabel=$2

pod_name=$(kubectl get pod -l "app=$appLabel" -n "$KUBE_NAMESPACE" -o custom-columns=:metadata.name --no-headers)

pod_name=$(kubectl get pod -l "app=$appLabel" -n "$KUBE_NAMESPACE" --sort-by '{.metadata.creationTimestamp}' -o custom-columns=:metadata.name --no-headers | tail -n 1)

# Wait for DB pod to be ready

count=0