add policy

Addons/minio-srotage/storage-policy.json

@@ -0,0 +1,14 @@
+{
+	"Version": "2012-10-17",
+	"Statement": [
+		{
+			"Effect": "Allow",
+			"Action": [
+				"s3:*"
+			],
+			"Resource": [
+				"arn:aws:s3:::gitlab-storage/*"
+			]
+		}
+	]
+}