[devtools] stop using lgc.testlib.TestCase
It's become incompatible with unittest(2).TestCase due to generative
tests. Just keep the datadir/datapath and assertCountEqual bits in our
BaseTestCase.
addressbook
basket
blog
book
calendar
comment
company
email
file
folder
i18ncontent
keyword
link
mailinglist
person
tag
timeseries
vcsfile