Fix golint warnings

pkg/util/constants/aws.go

@@ -5,7 +5,7 @@ import "time"
 // AWS specific constants used by other modules
 const (
 	// default region for AWS. TODO: move it to the operator configuration
-	AWS_REGION = "eu-central-1"
+	AWSRegion = "eu-central-1"
 	// EBS related constants
 	EBSVolumeIDStart = "/vol-"
 	EBSProvisioner   = "kubernetes.io/aws-ebs"

pkg/util/constants/postgresql.go

@@ -1,5 +1,6 @@
 package constants
 
+// PostgreSQL specific constants
 const (
 	DataVolumeName    = "pgdata"
 	PodRoleMaster     = "master"

pkg/util/constants/roles.go

@@ -1,5 +1,6 @@
 package constants
 
+// Roles specific constants
 const (
 	PasswordLength         = 64
 	UserSecretTemplate     = "%s.%s.credentials." + TPRKind + "." + TPRGroup // Username, ClusterName