Fix two test issues: - pidof is not available in PATH on some Jenkins systems (rhel, centos) Use kill -0 instead. - Cleanup after plugin test. This is a stop gap fix. The right way to fix this, is to shutdown the plugin on daemon shutdown path (except for the live-restore case). This will be done in a follow up PR. Signed-off-by: Anusha Ragunathan <anusha@docker.com> Upstream-commit: 6d36431e2395867d7bb101dbfd4340e132fd5438 Component: engine