BSC LCLS: add bts-loop tests

Add basic establishment and teardown tests for 'bts-loop' mode of LCLS:
* add explicit vty init for desired LCLS kind
* add necessary IPA RSL MDCX functions
* explicitly pass LCLS kind as a parameter to shared
  functions (defaulting to 'mgw-loop')

Change-Id: I40e786b430591899c722d99d685db26efa868508
Related: OS#3659
diff --git a/bsc/expected-results.xml b/bsc/expected-results.xml
index cd808d8..ff50990 100644
--- a/bsc/expected-results.xml
+++ b/bsc/expected-results.xml
@@ -94,4 +94,7 @@
   <testcase classname='BSC_Tests_LCLS' name='TC_lcls_gcr_bway_dont_connect_csc' time='MASKED'/>
   <testcase classname='BSC_Tests_LCLS' name='TC_lcls_connect_break' time='MASKED'/>
   <testcase classname='BSC_Tests_LCLS' name='TC_lcls_connect_clear' time='MASKED'/>
+  <testcase classname='BSC_Tests_LCLS' name='TC_lcls_bts_gcr_bway_connect' time='MASKED'/>
+  <testcase classname='BSC_Tests_LCLS' name='TC_lcls_bts_gcr_bway_connect_hr' time='MASKED'/>
+  <testcase classname='BSC_Tests_LCLS' name='TC_lcls_bts_connect_break' time='MASKED'/>
 </testsuite>