Collapsed forwarding test and sanity check

Signed-off-by: Ben Agricola <bagricola@squiz.co.uk>
Formatting changes (damn tabs!)

Signed-off-by: Ben Agricola <bagricola@squiz.co.uk>
Allow collapsed forwarding tests to run multiple times correctly
Signed-off-by: Ben Agricola <bagricola@squiz.co.uk>
Add before_install step to check redis version

Signed-off-by: Ben Agricola <bagricola@squiz.co.uk>
Moved checking_cache -> read_cache to a global pre_transition action
Merge pull request #54 from benagricola/collapsed_forwarding

Collapsed forwarding + bugfix
Removed debug hack for sleeping