Auth (#1147)

Implement the Auth interface, with JWT and service implementations.

* Update Auth Interface

* Define Auth Service Implementation

* Support Service Auth

* Add Auth Service Proto

* Remove erronious files

* Implement Auth Service Package

* Update Auth Interface

* Update Auth Interface. Add Validate, remove Add/Remove roles

* Make Revoke interface more explicit

* Refactor serializing and deserializing service accounts

* Fix srv name & update interface to be more explicit

* Require jwt public key for auth

* Rename Variables (Resource.ID => Resource.Name & ServiceAccount => Account)

* Implement JWT Auth Package

* Remove parent, add ID

* Update auth imports to v2. Add String() to auth interface

store/options.go

@@ -11,6 +11,8 @@ type Options struct {
 	Namespace string
 	// Prefix of the keys used
 	Prefix string
+	// Suffix of the keys used
+	Suffix string
 	// Alternative options
 	Context context.Context
 }
@@ -45,3 +47,10 @@ func ReadPrefix() ReadOption {
 		o.Prefix = true
 	}
 }
+
+// ReadSuffix uses the key as a suffix
+func ReadSuffix() ReadOption {
+	return func(o *ReadOptions) {
+		o.Suffix = true
+	}
+}