Unified Storage: Adds overrides service to resource server (#113794)

* first pass of adding quotas service resource server

* passes prom reg as param

init quota service as part of server params

* init quota service as part of server params

* adds config and only creates quota service when overrides file path is defined

* when quota service enabled, check quota on create and log result

* update log message

* adds tests for quota service

* adds tests for config reloading when the file changes

* fix linter errors

* fix comment

* use startAndAwaitRunning

* Simplifies quotas service. Call manager.GetConfig() when getting quota instead of watching for changes.

* adds tracing to quotas service

* adds nsr attributes to traces when getting quotas and resource stats

* update comment

* update comment

remove check for nil overrides since it will (should) never happen

* fix linter error

* refactors naming to overrides service

checks quotas in separate function

* fix quotas naming

* fixes more quotas -> overrides naming

* use logger from ctx

* linter - remove trailing whitespace

* log FromContext() when checking quotas

* adds events to spans instead of create new spans

updates tenant -> namespace naming

few other minor fixes

pkg/storage/unified/sql/server.go

@@ -30,19 +30,20 @@ type QOSEnqueueDequeuer interface {
 
 // ServerOptions contains the options for creating a new ResourceServer
 type ServerOptions struct {
-	Backend        resource.StorageBackend
-	DB             infraDB.DB
-	Cfg            *setting.Cfg
-	Tracer         trace.Tracer
-	Reg            prometheus.Registerer
-	AccessClient   types.AccessClient
-	SearchOptions  resource.SearchOptions
-	StorageMetrics *resource.StorageMetrics
-	IndexMetrics   *resource.BleveIndexMetrics
-	Features       featuremgmt.FeatureToggles
-	QOSQueue       QOSEnqueueDequeuer
-	SecureValues   secrets.InlineSecureValueSupport
-	OwnsIndexFn    func(key resource.NamespacedResource) (bool, error)
+	Backend          resource.StorageBackend
+	OverridesService *resource.OverridesService
+	DB               infraDB.DB
+	Cfg              *setting.Cfg
+	Tracer           trace.Tracer
+	Reg              prometheus.Registerer
+	AccessClient     types.AccessClient
+	SearchOptions    resource.SearchOptions
+	StorageMetrics   *resource.StorageMetrics
+	IndexMetrics     *resource.BleveIndexMetrics
+	Features         featuremgmt.FeatureToggles
+	QOSQueue         QOSEnqueueDequeuer
+	SecureValues     secrets.InlineSecureValueSupport
+	OwnsIndexFn      func(key resource.NamespacedResource) (bool, error)
 }
 
 func NewResourceServer(opts ServerOptions) (resource.ResourceServer, error) {
@@ -119,6 +120,7 @@ func NewResourceServer(opts ServerOptions) (resource.ResourceServer, error) {
 	serverOptions.IndexMetrics = opts.IndexMetrics
 	serverOptions.QOSQueue = opts.QOSQueue
 	serverOptions.OwnsIndexFn = opts.OwnsIndexFn
+	serverOptions.OverridesService = opts.OverridesService
 
 	return resource.NewResourceServer(serverOptions)
 }