tweak example config

Remove 'logging level all' setting.
Tweak some more logging details (to my current favorite).

Add USSD example for showing the IMSI.

Change-Id: I8296832704d779df5f1b20a595b568c99780e64d
diff --git a/doc/examples/osmo-hlr.cfg b/doc/examples/osmo-hlr.cfg
index 35d942d..54993a9 100644
--- a/doc/examples/osmo-hlr.cfg
+++ b/doc/examples/osmo-hlr.cfg
@@ -5,9 +5,10 @@
   logging filter all 1
   logging color 1
   logging print category 1
-  logging timestamp 1
+  logging print category-hex 0
+  logging print level 1
+  logging print file basename last
   logging print extended-timestamp 1
-  logging level all notice
   logging level main notice
   logging level db notice
   logging level auc notice
@@ -22,3 +23,4 @@
  gsup
   bind ip 127.0.0.1
  ussd route prefix *#100# internal own-msisdn
+ ussd route prefix *#101# internal own-imsi