Test printing refinement

[tkelman]

followup to #17165 / #18738, cc @kshyatt

right now the base tests are printing both old as-you-go info, in addition to a new table so it looks like

     * dsp                   maxrss 3501.18 MB
     * examples              maxrss 3501.18 MB
     * compile               maxrss 3501.18 MB

Test Summary: |     Pass  Broken     Total
  Overall     | 22171317      28  22171345
Test:                 | Total time (s): | GC time (s): | Percent in gc: | Allocated (MB): | RSS (MB):
linalg/triangular     |  546.77         |   11.92      |    2.18        | 8420.77         |  680.38
linalg/qr             |   89.66         |    1.85      |    2.06        | 2312.61         |  751.55

I propose we get rid of the old style and attempt to make the table just print new rows as they come in, if that's possible. The maxrss numbers are the same so it's duplicated information.

Additional printing-related followup from #17165 (comment), printing of @test true or @test 1==1 should be adjusted to not bother showing Expression: nothing now that passing tests don't save the input expressions any more.

[tkelman]

The table's also overly wide for default console widths so we should try to squeeze it down, maybe make the header wrapped to 2 rows with each title narrower, or drop the percent column?

#17165 (comment) name_align is too short if you only run short-named tests like env or int or pkg.

[kshyatt]

It should be possible to print row-by-row as each @testset returns.

The widest columns are Allocated, Percent in gc, and the test names (depending on what they are). One obvious fix is Percent -> %. Allocated -> Alloc.?

[tkelman]

Yeah good abbreviations. Which worker the tests ran on when they execute in parallel is useful info to show, we may want to make room for it in the table.

[kshyatt]

test_name (worker) ?

[tkelman]

This remains incomplete. @kshyatt any intention of revisiting this? Cases like https://travis-ci.org/JuliaLang/julia/jobs/173755550 give no indication of what line number within the spawn test actually failed.

[kshyatt]

@tkelman sorry I have been totally swamped with work. I will see if I can take a look today or tomorrow.