Simplified deploy/drain timeouts

Remove `stop_wait_time` and `readiness_timeout` from the root config
and remove `deploy_timeout` and `drain_timeout` from the proxy config.

Instead we'll just have `deploy_timeout` and `drain_timeout` in the
root config.

For roles that run the proxy, they are passed to the kamal-proxy deploy
command. Once that returns we can assume the container is ready to
shut down.

For other roles, we'll use the `deploy_timeout` when polling the
container to see if it is ready and the `drain_timeout` when stopping
the container.

test/integration/docker/deployer/app/config/deploy.yml

@@ -20,8 +20,9 @@ env:
       secret:
         - SECRET_TAG
 asset_path: /usr/share/nginx/html/versions
-proxy:
-  deploy_timeout: 2s
+deploy_timeout: 2
+drain_timeout: 2
+readiness_delay: 0
 
 registry:
   server: registry:4443
@@ -39,5 +40,3 @@ accessories:
     cmd: sh -c 'echo "Starting busybox..."; trap exit term; while true; do sleep 1; done'
     roles:
       - web
-stop_wait_time: 1
-readiness_delay: 0