fix(specs) Correctly set `configDirPath` when running tests
fix(specs) Correctly set `configDirPath` when running tests

Before this commit, running the running the tests would clear all of
your config inside `.nylas-dev` and thus your accounts, forcing you to re-add
them everytime after you ran the tests

This was happening because we weren't correctly setting the
`configDirPath` to `.nylas-spec` when running with the --test flag. When
we run with --test, both options, `specMode` and `devMode` are true, so
the logic to set the path would fall into both conditions and ultimately
set the path to `.nylas-dev`. Now it's fixed!

nylas/nylas-mail,nirmit/nylas-mail,simonft/nylas-mail,simonft/nylas-mail,nylas/nylas-mail,nirmit/nylas-mail,nylas/nylas-mail,nirmit/nylas-mail,nylas/nylas-mail,nylas-mail-lives/nylas-mail,nylas-mail-lives/nylas-mail,simonft/nylas-mail,simonft/nylas-mail,simonft/nylas-mail,nirmit/nylas-mail,nylas-mail-lives/nylas-mail,nirmit/nylas-mail,nylas/nylas-mail,nylas-mail-lives/nylas-mail,nylas-mail-lives/nylas-mail