Add ttcn3-bts-test env

Change-Id: I3251a49503dc823f0ef1fe8ef5d68236a584dad4
diff --git a/ttcn3/paths.conf b/ttcn3/paths.conf
new file mode 100644
index 0000000..27c5818
--- /dev/null
+++ b/ttcn3/paths.conf
@@ -0,0 +1,3 @@
+state_dir: '/var/tmp/osmo-gsm-tester/state'
+suites_dir: './suites'
+scenarios_dir: './scenarios'