build: move some of hack/lib/ into a new cluster/lib/

Some functionality in hack/lib is currently depended on by
cluster/common.sh so kube-up from the full release tar (which
does not include hack/) is currently broken. With this PR we
create cluster/lib/ and move the necessary bits from hack/
over to get kube-up working again.

Fixes: 96d1b8d1b2
Signed-off-by: Mike Danese <mikedanese@google.com>

test/component/scheduler/perf/test-performance.sh

@@ -20,7 +20,7 @@ set -o pipefail
 
 pushd "../../../.."
 source "./hack/lib/util.sh"
-source "./hack/lib/logging.sh"
+source "./cluster/lib/logging.sh"
 source "./hack/lib/etcd.sh"
 popd