When trying to identify various RedHat releases, RHEL was not being
picked up as a centos release because the Oracle Linux regex was too
permissive: it would match any release name with '<something> Linux
Server release' in the name. By being more restrictive with the Oracle
regex, RHEL is now properly identified.
I don't know why the Oracle regex used such a permissive matcher for the
name but it still passes all the tests by replacing it with the word
'Oracle'.
Fixes#436
Main Clair logic is changed in worker, updater, notifier for better adapting
ancestry schema. Extensions are updated with the new model and feature lister
and namespace detector drivers are able to specify the specific listers and
detectors used to process layer's content. InRange and GetFixedIn interfaces
are added to Version format for adapting ranged affected features and next
available fixed in in the future. Tests for worker, updater and extensions
are fixed.
created table layer_namespace to store the many to many unique mapping of layers and namespaces
changed v1 api to provide a list of namespaces for each layer
changed namespace detector to use all registered detectors to detect namespaces
updated tests for multiple namespaces
Fixes#150
