MGCP_Test: Test AMR octet-aligned/bandwith-efficient mode conversion

osmo-mgw now implements a conversion between the AMR octet-aligned
and banwith-efficient payload format. Lets add tests for this

Change-Id: I050bfeabfb5fdbf986d429eef3af69fe8158d56e
depends: osmo-mgw I622c01874b25f5049d4f59eb8157e0ea3cbe16ba
related: SYS#4470
diff --git a/mgw/expected-results.xml b/mgw/expected-results.xml
index f5bc1a0..5c520c5 100644
--- a/mgw/expected-results.xml
+++ b/mgw/expected-results.xml
@@ -38,4 +38,7 @@
   <testcase classname='MGCP_Test' name='TC_two_crcx_and_unsolicited_rtp' time='MASKED'/>
   <testcase classname='MGCP_Test' name='TC_two_crcx_and_one_mdcx_rtp_ho' time='MASKED'/>
   <testcase classname='MGCP_Test' name='TC_ts101318_rfc5993_rtp_conversion' time='MASKED'/>
+  <testcase classname='MGCP_Test' name='TC_amr_oa_bwe_rtp_conversion' time='MASKED'/>
+  <testcase classname='MGCP_Test' name='TC_amr_oa_oa_rtp_conversion' time='MASKED'/>
+  <testcase classname='MGCP_Test' name='TC_amr_bwe_bwe_rtp_conversion' time='MASKED'/>
 </testsuite>