[WIP] Micro Runtime (#947)

* Add Get() and GetOptions.

* Removed watcher. Outline of client. YAML templates

* Added default service and deployment templates and types

* Added API tests and cleaned up errors.

* Small refactoring. Template package is no more.

* Ripped out existing code in preparation to small rework

* Reshuffled the source code to make it organized better

* Create service and deployment in kubernetes runtime

* Major cleanup and refactoring of Kubernetes runtime

* Service now handles low level K8s API calls across both K8s deployment
an service API objects
* Runtime has a task queue that serves for queueing runtime action
requests
* General refactoring

* No need for Lock in k8s service

* Added kubernetes runtime env var to default deployment

* Enable running different versions of the same service

* Can't delete services through labels

* Proto cruft. Added runtime.CreateOptions implementation in proto

* Removed proxy service from default env variables

* Make service name mandatory param to Get method

* Get Delete changes from https://github.com/micro/go-micro/pull/945

* Replaced template files with global variables

* Validate service names before sending K8s API request

* Refactored Kubernetes API client. Fixed typos.

* Added client.Resource to make API resources more explicit in code

go.mod

@@ -32,9 +32,11 @@ require (
 	github.com/mholt/certmagic v0.8.3
 	github.com/micro/cli v0.2.0
 	github.com/micro/mdns v0.3.0
+	github.com/miekg/dns v1.1.15
 	github.com/mitchellh/hashstructure v1.0.0
 	github.com/nats-io/nats.go v1.9.1
 	github.com/nlopes/slack v0.6.0
+	github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c
 	github.com/pkg/errors v0.8.1
 	github.com/technoweenie/multipartstreamer v1.0.1 // indirect
 	go.uber.org/zap v1.12.0 // indirect