lxcpp: Added a synchronization step in Guard
lxcpp: Added a synchronization step in Guard

[Feature]       Waits for Init's setup
[Cause]         N/A
[Solution]      N/A
[Verification]  Build, install and run tests

Change-Id: I62e0767d2a4c3fec29b6c8e431170f74a437b51d

Samsung/vasum,Samsung/vasum,Samsung/vasum,Samsung/vasum