This revision defines the do-test target to make running tests for this port easier on FreeBSD.
The return codes of the test suite scripts are ignored as many tests still fail
(mostly due to incompatibilities between FreeBSD and other systems).
Also, tests have to be started from an interactive console: printf '%s\n' 'cd /usr/ports/shells/bash-completion' 'make test' | poudriere testport -i -j jail -o shells/bash-completion didn't work while running make test manually worked. It is probably related to https://github.com/scop/bash-completion/blob/2.8/doc/testing.txt#L149.