force bats version to v1.1.0

We experienced regression when using the latest `v1.2.0-dev` bats in
Ubuntu 20.04 (see github.com/containers/libpod/pull/6418).  Using
bats v1.1.0 worked in the Ubuntu test VM.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

hack/install_bats.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+set -e
+
+die() { echo "${1:-No error message given} (from $(basename $0))"; exit 1; }
+
+buildDir=$(mktemp -d)
+git clone https://github.com/bats-core/bats-core $buildDir
+
+pushd $buildDir
+pwd
+git reset --hard ${VERSION}
+./install.sh /usr/local
+popd
+
+rm -rf $buildDir