Fragment-host bundle is refreshed when a new fragment is installed

The Felix framework will not allow fragments to attach to an already resolved host. This results in resolution errors when a new fragment bundle appears in a new subsystem while the fragment-host is in an already started subsystem.

These resolution errors can be resolved by refreshing (FrameworkWiring.refreshBundles) the resolved fragment-host bundle after installing the fragment.

Aries could do this automatically when it encounters a fragment-host requirement when resolving a subsystem.

Related mailinglist discussion: http://mail-archives.apache.org/mod_mbox/aries-user/201602.mbox/browser