Resolve "Gitlab daemon crashing. Omnibus installation (Ubuntu 14.04)"

This MR fixes a collection of small problems thrown up while investigating the named issue:

• Some error messages are not reported correctly due to using println instead of log.Println
• Exercise the chrooted mode in the acceptance tests
• Document the CGO_ENABLED=0 requirement of the chrooted mode
• Clean up acceptance test running a little
• Add Go 1.8 to the list of CI builds
• Run the acceptance tests on all CI builds

Closes #4 (closed)

added 3 commits

• c8a3cb72 - fixup! Run the tests with gitlab-pages daemonised in the CI environment
• 5d384638 - fixup! Use fmt/log.Println, not the println builtin
• dd7b3953 - Rework the acceptance tests to use go test -short as a qualifier

Compare with previous version

marked as a Work In Progress from nick.thomas/gitlab-pages@c8a3cb72219d8e39a3b7a46dd0b9efbbe353c4e1

unmarked as a Work In Progress

added 3 commits

• 934a76c5 - Run the tests with gitlab-pages daemonised in the CI environment
• 114d0f40 - Document some caveats around the daemon mode
• 275cafa0 - Rework the acceptance tests to use go test -short as a qualifier

Compare with previous version

assigned to @zj

@zj can I get you to review this for me?

added 2 commits

• 8f4b9879 - Run the acceptance test suite on all golang versions
• a3c94ef6 - Run tests on golang 1.8

Compare with previous version

@nick.thomas It feels like this MR is solving a number of issues, instead of only the title. Thats the biggest nitpick I have ;)

assigned to @nick.thomas

resolved all discussions

@zj it definitely is doing that, but I don't think I should take the time to split it up into strictly separate parts.

mentioned in commit fbcbce12

merged

mentioned in merge request !14 (closed)

mentioned in issue #46 (closed)