tests: Wait for stabilization after deployment

the operator reinstall test only installs the runtime and finishes. This
can cause issues in consequent tests or in cleanup as was observed in
the CI (hang in cleanup after quick deployment).

Signed-off-by: Lukáš Doktor <ldoktor@redhat.com>

tests/e2e/operator_tests.bats

@@ -42,6 +42,9 @@ systemctl is-active "$container_runtime"
 ! is_operator_installed
 
 "${BATS_TEST_DIRNAME}/operator.sh" install
+
+# Wait for the deployment to be stable
+"${BATS_TEST_DIRNAME}/operator.sh" wait_for_stabilization
 }
 
 teardown() {