tlsdate: Improve logging

Improve tlsdate logging to make it easier to discover errors in
tlsdate.log:
(*) Make sure that die() prints to syslog too.
(*) Log IPv4/IPv6 address that tlsdate is connecting to.
(*) Verbose-log a few more steps.

BUG=chromium:1043315
TEST=will run tlsdate on kevin device with and without network connectivity

Change-Id: I2010fc94e39c0fa6a90a4921d93b6e82f9e35cfd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/tlsdate/+/2007635
Tested-by: Pavol Marko <pmarko@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Commit-Queue: Pavol Marko <pmarko@chromium.org>
2 files changed