Fix Bug#958148 Time in the log is hard to read.
Fix Bug#958148 Time in the log is hard to read.

Output year-month-day hour:min:sec.ms in the log.
Take pid into square brackets for better visibility.

guard163/tarantool,Sannis/tarantool,guard163/tarantool,condor-the-bird/tarantool,mejedi/tarantool,rtsisyk/tarantool,mejedi/tarantool,dkorolev/tarantool,guard163/tarantool,ocelot-inc/tarantool,nvoron23/tarantool,vasilenkomike/tarantool,rtsisyk/tarantool,rtsisyk/tarantool,dkorolev/tarantool,KlonD90/tarantool,nvoron23/tarantool,dkorolev/tarantool,guard163/tarantool,vasilenkomike/tarantool,Sannis/tarantool,dkorolev/tarantool,ocelot-inc/tarantool,dkorolev/tarantool,KlonD90/tarantool,vasilenkomike/tarantool,condor-the-bird/tarantool,vasilenkomike/tarantool,mejedi/tarantool,condor-the-bird/tarantool,KlonD90/tarantool,condor-the-bird/tarantool,ocelot-inc/tarantool,nvoron23/tarantool,KlonD90/tarantool,nvoron23/tarantool,Sannis/tarantool,Sannis/tarantool,Sannis/tarantool,mejedi/tarantool,nvoron23/tarantool,ocelot-inc/tarantool,KlonD90/tarantool,guard163/tarantool,vasilenkomike/tarantool,nvoron23/tarantool,condor-the-bird/tarantool,rtsisyk/tarantool