Add offset to the current time

Check that offset can be added to the current time of PTP device associated with the tested network interface.

Scenarios: X3-PTP003.

1. Find out PTP device associated with the IUT interface, call open() to get its FD.

2. Use clock_adjtime() to add time_offset seconds to the current time on the PTP device. With help of clock_gettime() check whether the clock works as expected after that.

3. Use clock_adjtime() to subtract time_offset seconds from the current time on the PTP device. With help of clock_gettime() check whether the clock works as expected after that.

Yurij Plotnikov Yurij.Plotnikov@arknetworks.am

Parameters:

env	Testing environment: env.peer2peer
time_offset	Time offset to add, in seconds
min_sleep	Minimum time to sleep between clock_gettime() calls when checking how the clock advances, seconds
max_sleep	Maximum time to sleep between clock_gettime() calls when checking how the clock advances, seconds