DL TS allocation: add test case to show TS allocation bug for 2nd DL TBF

This patch adds a test case test_2_consecutive_dl_tbfs which
expects a current bug with TS allocation for 2nd DL TBF.
The test's expectation is corrected along with the bug fix in a
subsequent commit

Related: OS#1792

Change-Id: I890e4fbb2b64037e051433e70082a197e2a929a6
diff --git a/tests/alloc/AllocTest.ok b/tests/alloc/AllocTest.ok
index 9f88186..cbb65aa 100644
--- a/tests/alloc/AllocTest.ok
+++ b/tests/alloc/AllocTest.ok
@@ -10793,3 +10793,6 @@
  TBF[31] class 14 reserves ......C.
  TBF[31] class 15 reserves .......C
   Successfully allocated 160 TBFs
+Testing DL TS allocation for Multi UEs
+TBF1: numTs(4)
+TBF2: numTs(3)