allow tests to download specific test data

issue 4658
remove test-data alias - no tests should use it

It's very unreliable (see issue 4568)
action#3136 - shared directories for remote workers
- move shared directories to /var/lib/openqa/share :
  factory/
  testresults/
  logs/
  logupload/
- create compatibility links
- add tests subdirectory
update workers documentation for remote workers
Merge pull request #70 from aaannz/remote-worker

Remote worker
Merge pull request #68 from os-autoinst/coolo_4658

allow tests to download specific test data
fix redirect for assets

Apache gives 403 if we access the repos through the symlink
Merge pull request #71 from os-autoinst/coolo_fix_apache

fix redirect for assets
fix apparmor profile against symlinked folder
Merge pull request #73 from nilxam/fix_apparmor_1114

fix apparmor profile against symlinked folder
debug output for Net::OpenID::Consumer
Merge pull request #69 from os-autoinst/coolo_4658_2

remove test-data alias - no tests should use it
Merge pull request #74 from lnussel/master

debug output for Net::OpenID::Consumer
Documenting the problem I had with DNS
Merge pull request #75 from Bischoff/master

Documenting the problem I had with DNS
fix hardcoding of test case dir
Merge pull request #76 from lnussel/master

fix hardcoding of test case dir
remove uploadlog functionality
remove /data functionality - moved to os-autoinst
Merge pull request #77 from os-autoinst/remove_moved_code

Remove moved code