Auto merge of #6200 - voxik:relax-directory-restrictions, r=segiddins
Auto merge of #6200 - voxik:relax-directory-restrictions, r=segiddins

Allow test execution in paths containing dash.

PR #5036 added restriction on what characters can be contained in path,
from where the specs are executed. But they dissallows even dash, which
is hopefully handled just fine on all systems.

This patch fixes #6185 by relaxing the restriction a bit and allowing
path to contain dash.

bundler/bundler,mvz/bundler,bundler/bundler,mvz/bundler,dilumnavanjana/bundler,dilumnavanjana/bundler