Add option to cosume connect events rather than polling to restart deployments

vendor/github.com/schollz/peerdiscovery/README.md

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+# peerdiscovery
+
+<img src="https://img.shields.io/badge/coverage-89%25-brightgreen.svg?style=flat-square" alt="Code coverage">&nbsp;<a href="https://goreportcard.com/report/github.com/schollz/peerdiscovery"><img src="https://goreportcard.com/badge/github.com/schollz/peerdiscovery?style=flat-square" alt="Go Report"></a>&nbsp;<a href="https://godoc.org/github.com/schollz/peerdiscovery"><img src="http://img.shields.io/badge/godoc-reference-5272B4.svg?style=flat-square" alt="Go Doc"></a> 
+
+Pure-go library for cross-platform thread-safe local peer discovery using UDP multicast. I needed to use peer discovery for [croc](https://github.com/schollz/croc) and everything I tried had problems, so I made another one.
+
+
+## Install
+
+Make sure you have Go 1.5+.
+
+```
+go get -u github.com/schollz/peerdiscovery
+```
+
+## Usage 
+
+The following is a code to find the first peer on the local network and print it out.
+
+```golang
+discoveries, _ := peerdiscovery.Discover(peerdiscovery.Settings{Limit: 1})
+for _, d := range discoveries {
+    fmt.Printf("discovered '%s'\n", d.Address)
+}
+```
+
+Here's the output when running on two computers. (*Run these gifs in sync by hitting Ctl + F5*).
+
+**Computer 1:**
+
+![computer 1](https://user-images.githubusercontent.com/6550035/39165714-ba7167d8-473a-11e8-82b5-fb7401ce2138.gif)
+
+**Computer 2:**
+
+![computer 1](https://user-images.githubusercontent.com/6550035/39165716-ba8db9ec-473a-11e8-96f7-e8c64faac676.gif)
+
+For more examples, see the scanning examples ([ipv4](https://github.com/schollz/peerdiscovery/blob/master/examples/ipv4/main.go) and [ipv6](https://github.com/schollz/peerdiscovery/blob/master/examples/ipv6/main.go)) or [the docs](https://pkg.go.dev/github.com/schollz/peerdiscovery).
+
+
+## Testing
+
+To test the peer discovery with just one host, one can launch multiple containers. The provided `Dockerfile` will run the example code.
+Please make sure to enable [Docker's IPv6 support](https://docs.docker.com/v17.09/engine/userguide/networking/default_network/ipv6/) if you are using IPv6 for peer discovery.
+
+```console
+# Build the container, named peertest
+$ docker build -t peertest .
+
+# Execute the following command in multiple terminals
+$ docker run -t --rm peertest
+Scanning for 10 seconds to find LAN peers
+ 100% |████████████████████████████████████████|  [9s:0s]Found 1 other computers
+0) '172.17.0.2' with payload 'zqrecHipCO'
+```
+
+
+## Contributing
+
+Pull requests are welcome. Feel free to...
+
+- Revise documentation
+- Add new features
+- Fix bugs
+- Suggest improvements
+
+## Thanks
+
+Thanks [@geistesk](https://github.com/geistesk) for adding IPv6 support and a `Notify` func, and helping maintain! Thanks [@Kunde21](https://github.com/Kunde21) for providing a bug fix and massively refactoring the code in a much better way. Thanks [@robpre](https://github.com/robpre) for finding and fixing bugs. Thanks [@shvydky](https://github.com/shvydky) for adding dynamic payloads.
+
+## License
+
+MIT