allow runners to submit large build logs
allow runners to submit large build logs

The default nginx configuration will only allow for 1 megabyte request bodies, so large build logs from runners will be rejected by the server.

This patch sets the limit to 10 megabytes. I'm not sure what a sensible default might be, but 1m seem a bit over-conservative to me.
mfittko/gitlab-ci,edgemaster/gitlab-ci,c-owens/gitlab-ci,gitlabhq/gitlab-ci,jvanbaarsen/gitlab-ci,copystudy/gitlab-ci,edgemaster/gitlab-ci,akarokr/gitlab-ci,copystudy/gitlab-ci,akarokr/gitlab-ci,akarokr/gitlab-ci,Bugagazavr/gitlab-ci,gitlabhq/gitlab-ci,yonglehou/gitlab-ci,yonglehou/gitlab-ci,c-owens/gitlab-ci,fscherwi/gitlab-ci,AICIDNN/gitlab-ci,AICIDNN/gitlab-ci,c-owens/gitlab-ci,Bugagazavr/gitlab-ci,yonglehou/gitlab-ci,fscherwi/gitlab-ci,edgemaster/gitlab-ci,gitlabhq/gitlab-ci,fscherwi/gitlab-ci,Bugagazavr/gitlab-ci,mfittko/gitlab-ci,gitlabhq/gitlab-ci,pavel69/gitlab-ci,mfittko/gitlab-ci,svdata/gitlab-ci,AICIDNN/gitlab-ci,copystudy/gitlab-ci,edgemaster/gitlab-ci,svdata/gitlab-ci,akarokr/gitlab-ci,ayufan/gitlab-ci,copystudy/gitlab-ci,ayufan/gitlab-ci,svdata/gitlab-ci,c-owens/gitlab-ci,fscherwi/gitlab-ci,AICIDNN/gitlab-ci