Use go-micro store to cache the roles (#4337)

* Use go-micro store to cache the roles

Add custom in-memory implementation

* replace redis with custom etcd implementation

* adjust table name for the cache in the roles manager

* Fix tests

* Fix sonarcloud issues

* Refactor for sonarcloud

* Allow configuration of cache per service

* Reuse parent context in etcd implementation

ocis-pkg/config/parser/parse.go

@@ -48,6 +48,9 @@ func EnsureDefaults(cfg *config.Config) {
 	if cfg.TokenManager == nil {
 		cfg.TokenManager = &shared.TokenManager{}
 	}
+	if cfg.CacheStore == nil {
+		cfg.CacheStore = &shared.CacheStore{}
+	}
 }
 
 // EnsureCommons copies applicable parts of the oCIS config into the commons part
@@ -81,6 +84,16 @@ func EnsureCommons(cfg *config.Config) {
 		cfg.Commons.Tracing = &shared.Tracing{}
 	}
 
+	if cfg.CacheStore != nil {
+		cfg.Commons.CacheStore = &shared.CacheStore{
+			Type:    cfg.CacheStore.Type,
+			Address: cfg.CacheStore.Address,
+			Size:    cfg.CacheStore.Size,
+		}
+	} else {
+		cfg.Commons.CacheStore = &shared.CacheStore{}
+	}
+
 	// copy token manager to the commons part if set
 	if cfg.TokenManager != nil {
 		cfg.Commons.TokenManager = cfg.TokenManager