Leap seconds are not taken into account in ZIS AUX log messages

[ifakhrutdinov]

Describe the bug

The getCurrentLogTimestamp function from zis-aux/src/aux-utils.c does not taken into account the leap seconds which results in incorrect timestamps in AUX log messages in SYSPRINT.

Steps to Reproduce

1. Start ZIS with AUX
2. Look at any message in SYSPRINT
3. The timestamp does not match messages in the JES log because the leap seconds aren't taken into account

Expected behavior

The leap seconds are taken into account.