Explicitly set /bin/bash for running innobackupex-restore-call.sh script

Salt command using /bin/sh shebang if it's not specified clearly.
While innobackupex-restore-call.sh script supports only /bin/bash.

Change-Id: Iee6f351b6907e3ea601799679c4ee148aad86a5d
Related-Prod: PROD-32439
1 file changed