qa: rbd_groups.sh: change interpreter to bash

Commit e0da2a4e8cae ("qa/workunits/rbd: Add test to list snapshots of
consistency group") added bash-specific syntax.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
(cherry picked from commit 8f712733af25ddaa3d7a55c571042ef70ecf9454)

diff --git a/qa/workunits/rbd/rbd_groups.sh b/qa/workunits/rbd/rbd_groups.sh
index 4c684adfb0ea68c210878660d8b16f0a6c0f6c45..a3261848441f046ee53a9ce1dcafe352e9156d6a 100755 (executable)
--- a/qa/workunits/rbd/rbd_groups.sh
+++ b/qa/workunits/rbd/rbd_groups.sh
@@ -1,4 +1,6 @@
-#!/bin/sh -ex
+#!/usr/bin/env bash
+
+set -ex
 
 #
 # rbd_consistency_groups.sh - test consistency groups cli commands