luna-service2: Add missing dependency on boost

:Release Notes:
bhv-3965-crash-svc.cpp is using boost/scope_exit.h, but CMakeLists.txt
doesn't check for boost availability and build fails in do_compile.

:Detailed Notes:
boost dependency was added in https://g2g.palm.com/5212

:Testing Performed:
Only build tested

:QA Notes:
No change to image.

:Issues Addressed:
luna-service2 submission 184 added an undeclared dependency on boost

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@lge.com>

Change-Id: I05ccd5fa9f9c08c405a04629e924be1f97e385a2
Reviewed-on: https://g2g.palm.com/5277
Reviewed-by: DCO Verification
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>