Switch console log time format to RFC3339

[roman-kruglov]

instead of default epoch floating time

Description

This format should be more familiar for users. Why not ISO8601 - to my taste RFC3339 is a tad more readable. Although both formats are almost interchangeable.

Type of change

• Breaking change (fix or feature that would cause existing functionality to not work as expected)

It changes the existing console log format, some users might rely on epoch time.

How Has This Been Tested?

Ran in my terminal, saw the output.

Test Configuration

• Release version: latest main's top (latest release is .33)
• Platform: Mac OS

Logs

After the change:

2022-05-08T15:56:23+03:00       info    job/http.go:70  single http request     {"target": "https://sample"}
2022-05-08T15:56:23+03:00       info    job/http.go:70  single http request     {"target": "https://sample"}

[pashagolub]

LGTM