gammarus: Fix permissions for DWDM scanning

The makeusers syntax was wrong, and the service was running under an
incorrect GID.

Change-Id: Ia87148f54782521450cda94cc5391862990f83ce
Depends-on: https://gerrit.cesnet.cz/c/CzechLight/gammarus/+/3776
diff --git a/package/gammarus/gammarus.mk b/package/gammarus/gammarus.mk
index 6a11f92..ec50798 100644
--- a/package/gammarus/gammarus.mk
+++ b/package/gammarus/gammarus.mk
@@ -10,7 +10,7 @@
 endef
 
 define GAMMARUS_USERS
-	yangnobody 333666 nobody * - - - Anonymous operations via RESTCONF
+	yangnobody 333666 yangnobody 333666 * - - - Unauthenticated operations via RESTCONF
 endef
 
 $(eval $(generic-package))
diff --git a/submodules/gammarus b/submodules/gammarus
index ee4affa..293e6ae 160000
--- a/submodules/gammarus
+++ b/submodules/gammarus
@@ -1 +1 @@
-Subproject commit ee4affaed7b450e79d72793bd114d7f88c42fc67
+Subproject commit 293e6ae00e7e43a29c66b657fdc325ff2b6517a4