[IMP] Advanced filtering

[fkantelberg]

This change allows the module filtering to be overrules by more specific rules. Following example:

repos:
  parts/test:
    modules:
      - "!ab*"
      - "a*"
      -  "abc*

• Module ab is forbidden because the !ab* blacklist rule is more specific than the a* rule
• Module abcd is allowed because the abc* whitelist rule is more specific than the !ab* rule

Additionally the application of the default repository is moving to the post processing of the config.