[KARAF-2888] Use single resolution to compute feature conditionals, modelled with optional resources
[KARAF-2888] Fix configuration options to actually make them configurable
[KARAF-2888] Add a simulation option
[KARAF-2807] Support multiple subshells in one bundle
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/karaf