fix(getConfig): custom metadata (#3047)

* fix(getConfig): custom metadata

when re-using getConfig it is now possible to provide a custom metadata resolver

* clean up coding

cmd/getConfig.go

@@ -240,7 +240,10 @@ func resolveMetadata() (config.StepData, error) {
 		}
 	} else {
 		if configOptions.stepName != "" {
-			metadataMap := GetAllStepMetadata()
+			if GeneralConfig.MetaDataResolver == nil {
+				GeneralConfig.MetaDataResolver = GetAllStepMetadata
+			}
+			metadataMap := GeneralConfig.MetaDataResolver()
 			var ok bool
 			metadata, ok = metadataMap[configOptions.stepName]
 			if !ok {

cmd/piper.go

@@ -41,6 +41,7 @@ type GeneralConfigOptions struct {
 	VaultNamespace       string
 	VaultPath            string
 	HookConfig           HookConfiguration
+	MetaDataResolver     func() map[string]config.StepData
 }
 
 // HookConfiguration contains the configuration for supported hooks, so far Sentry and Splunk are supported.