DPL enhancement - line printing in case of error

DPL enhancement - line printing in case of error

[Issue#]        SSDWSSP-710
[Feature]       Provides backtrace (i.e. source code file name + line number)
                in case of error.
[Cause]         Info amount in case of test failure was not sufficient
                to determine execution path. There was a need of passing
                __LINE__ or similar preprocessor macros as arguments.
[Solution]      Backtrace printing based on the gdb output (gdb is triggered
                after particular test fails).
[Verification]  Compile & install on the target. Run without gdb installed too.
                Run example tests which fails and examine the output.

Change-Id: I749b8efa9ce457df41baebbaefd6aec869f772a7