Revert "bash -> sh"

This reverts commit 5c37e92fa1.

devnet/tests.yaml

@@ -13,7 +13,7 @@ spec:
           command:
             - /bin/sh
             - -c
-            - "sh /app/testing/sdk.sh && touch /app/testing/success"
+            - "bash /app/testing/sdk.sh && touch /app/testing/success"
           readinessProbe:
             exec:
               command:

testing/sdk.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 set -e
 while [[ "$(curl -s -o /dev/null -w ''%{http_code}'' guardian:6060/readyz)" != "200" ]]; do sleep 5; done
 while [[ "$(curl -s -o /dev/null -w ''%{http_code}'' spy:6060/metrics)" != "200" ]]; do sleep 5; done