This change adds:
year-month-day to the hours:minutes:secondes.{microseconds|nanoseconds}.
It allows to catch more issues with timestamps processing.
For some test using their own display time options, use 'SPECIAL_t' in
options.
rfc1048_print() used to print DHCP options in a few different formats
depending on the context (see GH issue #866):
* at the top of an RFC 1048 block:
* known options: [string] name and [decimal] tag
* unknown options: tag twice
* inside a Parameter Request (55) block:
* known options: name
* unknown options: tag
Change it to use the "Name (tag)" format (as in TCP, BGP, etc) in all
contexts. Update output for 8 tests.
This will avoid some differences when checking in different time zones.
We now run the tests without the '-t' option. This will allow to get
problems/changes in time printing functions.
Update the output of the tests accordingly.
Moreover:
Add the '-#' option to better identify a packet when there is a difference
in output.
