Exclude un-testable codes from line coverage analysis

Exclude un-testable codes from line coverage analysis

- Issue:
Some codes can not be tested in automatic test enviroment. Those code
are effected by the behavior of engine or configuration.

- Solution:
This patch excludes some codes that are not tested by automatic test
enviroment from line coverage analysis. To excludes those codes, this
patch adds special comments that indicate that codes are excluded from
line coverage analysis.

Change-Id: I6201bbd7b341dcede7400565a6b106f5d1228cd6
Signed-off-by: Suyeon Hwang <stom.hwang@samsung.com>