Add changeable config directory for root
What does this MR do?
Added variable ROOTCONFIGDIR
for set config directory for gitlab-runner executed by root.
Ex, using while build time: -X gitlab.com/gitlab-org/gitlab-runner/commands.ROOTCONFIGDIR=/usr/local/etc/gitlab-runner
Why was this MR needed?
Some OS use different etc directory instead /etc
(preconfigured for Linux). Ex, FreeBSD uses /usr/local/etc
.
Edited by Boris Korzun