log grabbing: obtain timestamps on extra services

[bobbypage]

Previously if any test jobs added additional log dumps, such as
containerd-installation for example, the logs would grabbed with sudo journalctl --output=cat. --output=cat excludes timestamps which
makes debugging difficult. Let's use short-precise output similar to
to the other log grabbing commands which includes timestamps.

As per man journalctl

--output=
           Controls the formatting of the journal entries that are
           shown. Takes one of the following options:

...

           short-precise
               is very similar, but shows classic syslog timestamps with
               full microsecond precision.

           cat
               generates a very terse output, only showing the actual
               message of each journal entry with no metadata, not even
               a timestamp. If combined with the --output-fields= option
               will output the listed fields for each log record,
               instead of the message.

Signed-off-by: David Porter david@porter.me

What type of PR is this?

/kind bug

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[bobbypage]

/assign @dims
/cc @SergeyKanzhelev

This should make debugging a bit simpler, timestamps can be very useful :). For example the containerd-installation.log don't have timestamps currently due to being grabbed with --output=cat.

I'm not sure why we didn't include timestamps here in the first place, but I don't see any downside with including them.

[bobbypage]

/sig testing

[bobbypage]

/retest

[dims]

/approve
/lgtm
/skip
/retest

[dims]

/retest
/priority important-soon
/triage accepted

[mborsz]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bobbypage, dims, mborsz

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[mborsz]

/retest