[PTS-Bot] Added 11 L2CAP test cases

L2CAP/COS/CED/BV-03-C
L2CAP/COS/CFC/BV-01-C
L2CAP/COS/CFC/BV-02-C
L2CAP/COS/CFC/BV-03-C
L2CAP/COS/CFC/BV-04-C
L2CAP/COS/IEX/BV-02-C
L2CAP/COS/ECH/BV-01-C
L2CAP/EXF/BV-01-C
L2CAP/EXF/BV-02-C
L2CAP/EXF/BV-03-C
L2CAP/EXF/BV-05-C

Test: atest pts-bot:L2CAP -v
Change-Id: Id3c63f97d137d8525ec8c9f44a389b0cf2c6cc7b