logging: add a new category DLCSN1 for libosmo-csn1

This new category is going to be used by CSN.1 codec in libosmo-csn1.

Change-Id: Ie8c0effb764547a0f9cc8c6825e11a6617501e95
diff --git a/tests/logging/logging_vty_test.vty b/tests/logging/logging_vty_test.vty
index 860f5c5..2cff62c 100644
--- a/tests/logging/logging_vty_test.vty
+++ b/tests/logging/logging_vty_test.vty
@@ -54,7 +54,7 @@
   logging print level (0|1)
   logging print file (0|1|basename) [last]
   logging set-log-mask MASK
-  logging level (aa|bb|ccc|dddd|eee|lglobal|llapd|linp|lmux|lmi|lmib|lsms|lctrl|lgtp|lstats|lgsup|loap|lss7|lsccp|lsua|lm3ua|lmgcp|ljibuf|lrspro|lns|lbssgp|lnsdata|lnssignal|liuup|lpfcp) (debug|info|notice|error|fatal)
+  logging level (aa|bb|ccc|dddd|eee|lglobal|llapd|linp|lmux|lmi|lmib|lsms|lctrl|lgtp|lstats|lgsup|loap|lss7|lsccp|lsua|lm3ua|lmgcp|ljibuf|lrspro|lns|lbssgp|lnsdata|lnssignal|liuup|lpfcp|lcsn1) (debug|info|notice|error|fatal)
   logging level set-all (debug|info|notice|error|fatal)
   logging level force-all (debug|info|notice|error|fatal)
   no logging level force-all
@@ -472,7 +472,7 @@
 
 logging_vty_test# list
 ...
-  logp (aa|bb|ccc|dddd|eee|lglobal|llapd|linp|lmux|lmi|lmib|lsms|lctrl|lgtp|lstats|lgsup|loap|lss7|lsccp|lsua|lm3ua|lmgcp|ljibuf|lrspro|lns|lbssgp|lnsdata|lnssignal|liuup|lpfcp) (debug|info|notice|error|fatal) .LOGMESSAGE
+  logp (aa|bb|ccc|dddd|eee|lglobal|llapd|linp|lmux|lmi|lmib|lsms|lctrl|lgtp|lstats|lgsup|loap|lss7|lsccp|lsua|lm3ua|lmgcp|ljibuf|lrspro|lns|lbssgp|lnsdata|lnssignal|liuup|lpfcp|lcsn1) (debug|info|notice|error|fatal) .LOGMESSAGE
 ...
 
 logging_vty_test# logp?
@@ -509,6 +509,7 @@
   lnssignal  GPRS NS layer signal PDU
   liuup      Iu UP layer
   lpfcp      libosmo-pfcp Packet Forwarding Control Protocol
+  lcsn1      libosmo-csn1 Concrete Syntax Notation 1 codec
 
 logging_vty_test# logp lglobal ?
   debug   Log debug messages and higher levels