tests/rlcmac: add a new test vector for Packet Resource Request

This test vector (from HTC Desire 628) demonstrates a bug in the
CSN.1 decoder. For some reason, OsmoPCU fails to decode it:

  DCSN1 ERROR csnStreamDecoder: error NEED_MORE BITS TO UNPACK (-5)
              at EGPRS_TimeslotLinkQualityMeasurements (idx 164)

while Wireshark dissects it without any errors.

Change-Id: If5873355d52d7ddb06c2716154a88d34100f6ab5
Reported: https://osmocom.org/issues/4338#note-15
Related: OS#4338
diff --git a/tests/rlcmac/RLCMACTest.ok b/tests/rlcmac/RLCMACTest.ok
index 2aea569..c44ad6a 100644
--- a/tests/rlcmac/RLCMACTest.ok
+++ b/tests/rlcmac/RLCMACTest.ok
@@ -106,6 +106,14 @@
 vector1 = 40 16 71 3d c0 94 27 0c a2 ae 57 ef 90 90 06 aa 0f c0 00 1f 80 22 2b 
 vector2 = 40 16 71 3d c0 94 27 0c a2 ae 57 ef 90 90 06 aa 0f c0 00 1f 80 22 2b 
 vector1 == vector2 : TRUE
+vector1 = 401673c87f24af2632b25964200600000091000b780080
+=========Start DECODE===========
++++++++++Finish DECODE (-5)++++++++++
+=========Start ENCODE=============
++++++++++Finish ENCODE (0)+++++++++++
+vector1 = 40 16 73 c8 7f 24 af 26 32 b2 59 64 20 06 00 00 00 91 00 0b 78 00 80 
+vector2 = 40 16 73 c8 7f 24 ae d2 32 b2 59 64 20 06 00 00 00 91 00 0b 64 03 2b 
+vector1 == vector2 : FALSE
 vector1 = 40200ffc0021ec010b2b2b2b2b2b2b2b2b2b2b2b2b2b2b
 =========Start DECODE===========
 +++++++++Finish DECODE (0)++++++++++