Add some live integration tests for CI

[akarve]

TODO:

• [ ] debug socket errors
• [ ] ensure cleanup works properly (and that it's OK not to subclass QuiltTestCase)

[codecov-io]

Codecov Report

Merging #1518 into master will increase coverage by 1.66%. The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #1518      +/-   ##
=========================================
+ Coverage   82.83%   84.5%   +1.66%     
=========================================
  Files          27      28       +1     
  Lines        3706    3731      +25     
=========================================
+ Hits         3070    3153      +83     
+ Misses        636     578      -58

Impacted Files	Coverage Δ
tests/integration/test_live.py	100% <0%> (ø)
quilt3/packages.py	90.39% <0%> (+1.2%)	:arrow_up:
tests/conftest.py	93.47% <0%> (+2.04%)	:arrow_up:
quilt3/search_util.py	82.75% <0%> (+6.89%)	:arrow_up:
quilt3/data_transfer.py	76.48% <0%> (+8.61%)	:arrow_up:

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[drernie]

Seems obsolete. Closing. Please re-open if still interested.