fix(glauth): rename OPC/Gw testers to avoid username/group case-collision

glauth exposes each group as cn=<Group> under ou=users, so a case-insensitive
(cn=x) search matched both the user and the group (2 entries -> the shared
ZB.MOM.WW.Auth.Ldap 'exactly one entry' rule failed the bind). Renamed the 4
colliding testers (readonly/writetune/alarmack/gwreader) + the 2 siblings for
consistency: opc-readonly/opc-writeop/opc-writetune/opc-writeconfig/opc-alarmack
and gw-viewer. Verified gw-viewer logs into the MxGateway dashboard as Viewer.
multi-role/admin/designer/etc. were never affected (no case-collision).

infra/glauth/config.toml

@@ -118,36 +118,40 @@
   primarygroup = 5504
   passsha256 = "5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8"
 
-# MxGateway dashboard Viewer tester
+# MxGateway dashboard Viewer tester.
+# NOTE: tester usernames must NOT case-collide with a group name — glauth exposes
+# each group as cn=<Group> under ou=users, so a case-insensitive (cn=X) search
+# would match both the user and the group (ambiguous → auth fails). Hence gw-viewer
+# (not "gwreader" which collides with the GwReader group), opc-* below, etc.
 [[users]]
-  name = "gwreader"
+  name = "gw-viewer"
   uidnumber = 5106
   primarygroup = 5611
   passsha256 = "5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8"
 
 # OPC-UA permission testers
 [[users]]
-  name = "readonly"
+  name = "opc-readonly"
   uidnumber = 5101
   primarygroup = 5601
   passsha256 = "5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8"
 [[users]]
-  name = "writeop"
+  name = "opc-writeop"
   uidnumber = 5102
   primarygroup = 5602
   passsha256 = "5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8"
 [[users]]
-  name = "writetune"
+  name = "opc-writetune"
   uidnumber = 5103
   primarygroup = 5603
   passsha256 = "5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8"
 [[users]]
-  name = "writeconfig"
+  name = "opc-writeconfig"
   uidnumber = 5104
   primarygroup = 5604
   passsha256 = "5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8"
 [[users]]
-  name = "alarmack"
+  name = "opc-alarmack"
   uidnumber = 5105
   primarygroup = 5605
   passsha256 = "5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8"