Add tests program for security-server2

Add tests program for security-server2

This commit contains binary security-client that may be used to
test security-server2.

Minor changes:
 * Remove duplicated optimalization option from build commands.
 * Remove --std=c++0x option from gcc command.
 * Set up DEBUG profile as default.

[Issue#]        N/A
[Feature]       Add security-client binary.
[Cause]         DPL framework is too limited to test security-server2.
[Solution]      N/A
[Verification]  Run "security-client echo" and
                "security-client rule oneoneone twotwotwo". In second
                case you shoud see new rule in system.

Change-Id: I4c8316a8e9ce4e2a80d636a3e9235ccd50171e79