Fix ccache not working and builds taking same time as the one without cache
Description
Previously at v141.0.7390.70 the ccache used to work and minor version bumps used to take 18-20 minutes but since v141.0.7390.111 this has changed and build used to take same time as when no cache was available. So all builds were taking around 4-5 hours for like 5 months. These ccache changes fixes that. And now each variant takes ~20 mins approx. So whole build taking max 1 hour.
Also now a specific server runs the builds for a variant so that ccache is effective and the variant server is building its cache is present in server
Issues
https://gitlab.e.foundation/e/os/backlog/-/issues/4113
10 commandments of code review
Edited by Nishith Khanna