find_instance: suggest close matches

If no exact match is found for the given instance name, search for
instances with names for which the given name is a prefix, and suggest
these instances.
Merge pull request #16 from Miciah/find_instance-suggest-close-matches

Merged by openshift-bot
add get detached volumes method
cleanup unused snapshots and volumes
lower interval for cleanup
add as7 cart to fedora packages
Merge pull request #49 from bdecoste/master

add as7 cart to fedora packages