cfg templates: log level and source basename last, log no category-hex

Makes for saner log output in stderr files.

Change-Id: I2755beffd18d6779367c04e4aaaed119d66eb3be
diff --git a/src/osmo_gsm_tester/templates/osmo-bts-virtual.cfg.tmpl b/src/osmo_gsm_tester/templates/osmo-bts-virtual.cfg.tmpl
index 2276c86..64985e8 100644
--- a/src/osmo_gsm_tester/templates/osmo-bts-virtual.cfg.tmpl
+++ b/src/osmo_gsm_tester/templates/osmo-bts-virtual.cfg.tmpl
@@ -3,6 +3,9 @@
   logging color 1
   logging print extended-timestamp 1
   logging print category 1
+  logging print category-hex 0
+  logging print level 1
+  logging print file basename last
   logging level abis debug
   logging level oml debug
   logging level pag debug