Add connect_without_watcher function

[jgould22]

This PR addresses #58

While debugging what I initially thought was a watcher compatibility issue with clickhouse-keeper which exposes a zookeeper compatible api (with some exceptions, see here ) would fail to connect with Error { source: None, message: "failed to enqueue new request: Canceled" }

Still need to poke it it a bit though because I thought I had it working but it still isnt.

Regardless.

This PR adds the connect_without_watcher method which allows a connection without the watcher stream.

Additionally it adds some convenience code to allow developers to set the address for the test zookeeper instance and updates the README.md to mention this.

[stackable-cla]

All committers have signed the CLA.

[jgould22]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.You have signed the CLA already but the status is still pending? Let us recheck it.

I am getting Unknown authentication strategy "github" however that is the only one offered

Error: Unknown authentication strategy "github"
    at attempt (/cla-assistant/node_modules/passport/lib/middleware/authenticate.js:190:39)
    at authenticate (/cla-assistant/node_modules/passport/lib/middleware/authenticate.js:367:7)
    at checkReturnTo (/cla-assistant/src/server/src/controller/user.js:39:7)
    at Layer.handle [as handle_request] (/cla-assistant/node_modules/express/lib/router/layer.js:95:5)
    at next (/cla-assistant/node_modules/express/lib/router/route.js:137:13)
    at Route.dispatch (/cla-assistant/node_modules/express/lib/router/route.js:112:3)
    at Layer.handle [as handle_request] (/cla-assistant/node_modules/express/lib/router/layer.js:95:5)
    at /cla-assistant/node_modules/express/lib/router/index.js:281:22
    at Function.process_params (/cla-assistant/node_modules/express/lib/router/index.js:335:12)
    at next (/cla-assistant/node_modules/express/lib/router/index.js:275:10)

[lfrancke]

Sorry, we'll look into the CLA bot

[Jimvin]

@jgould22 Could you try signing the CLA again please? It should be working now.