Rewrite the store interface (#1335)

* WIP store rewrite

* Fix memory store tests

* Store hard expiry times rather than duration!

* Clarify memory test

* Add limit to store interface

* Implement suffix option

* Don't return nils from noop store

* Fix syncmap

* Start fixing store service

* wip service and cache

* Use _ for special characters in cockroachdb namespace

* Improve cockroach namespace comment

* Use service name as default store namespace

* Fixes

* Implement Store Scope

* Start fixing etcd

* implement read and write with expiry and prefix

* Fix etcd tests

* Fix cockroach store

* Fix cloudflare interface

* Fix certmagic / cloudflare store

* comment lint

* cache isn't implemented yet

* Only prepare DB staements once

Co-authored-by: Ben Toogood <ben@micro.mu>
Co-authored-by: ben-toogood <bentoogood@gmail.com>

service.go

@@ -17,6 +17,7 @@ import (
 	"github.com/micro/go-micro/v2/logger"
 	"github.com/micro/go-micro/v2/plugin"
 	"github.com/micro/go-micro/v2/server"
+	"github.com/micro/go-micro/v2/store"
 	"github.com/micro/go-micro/v2/util/config"
 	"github.com/micro/go-micro/v2/util/wrapper"
 )
@@ -104,6 +105,13 @@ func (s *service) Init(opts ...Option) {
 			logger.Fatal(err)
 		}
 
+		// If the store has no namespace set, fallback to the
+		// services name
+		if len(store.DefaultStore.Options().Namespace) == 0 {
+			name := s.opts.Cmd.App().Name
+			store.DefaultStore.Init(store.Namespace(name))
+		}
+
 		// TODO: replace Cmd.Init with config.Load
 		// Right now we're just going to load a token
 		// May need to re-read value on change