address test suite stability issues
Description
Investigate any remaining test failures reported from Travis CI.
(No unaddressed failures at the moment).
Environment
Activity
Old failures that have potentially been fixed now:
Should be fixed via https://github.com/bro/bro/commit/01300f87061a373535cc2e07f485a661273d45e1
https://travis-ci.org/bro/bro/jobs/421789748 scripts.base.frameworks.config.updates
Should be fixed via https://github.com/bro/bro/commit/1eeecf5fccc49e1526f162d6a355b3ec37398cf0
https://travis-ci.org/bro/bro/jobs/418744582 scripts.base.frameworks.logging.field-extension-cluster-error
Probably related to changes done in then maybe fixed by https://github.com/bro/bro/commit/af181474c1e70ab2b0d04b2d1a34d4f3b743aa70
https://travis-ci.org/bro/bro/jobs/419726875 scripts.base.utils.exec (btest-diff failed)
https://travis-ci.org/bro/bro/jobs/419726877 scripts.base.frameworks.input.invalid-lines (aborted)
Maybe fixed by https://github.com/bro/bro/commit/fc7d3cd98120bcf2396d7e3cef272eb167dba257
https://travis-ci.org/bro/bro/jobs/414719986 scripts.base.frameworks.netcontrol.acld (did not terminate)
https://travis-ci.org/bro/bro/jobs/416425177 scripts.base.frameworks.netcontrol.acld-hook (did not terminate)
Maybe fixed by https://github.com/bro/bro/commit/f41f392743f8e2724d16f4a1f4e6b73c5654b2e8 via
https://travis-ci.org/bro/bro/jobs/417466827 scripts.base.frameworks.input.predicatemodifyandreread
