Better logging for ResourceManager and ResourceRepository.

- ResourceManager now logs available repositories when a reposiroty is not found.
- ResourceRepository now logs the resourceId in logger operations (i.e. createResource, persistResource)
Merge branch 'improv/rm-logging' into improv/karaf2.3.5
Avoid blueprint container reloading.

This patch sets update-strategy="none" in all blueprint property-holders.

Using update-strategy="none" is a workaround for the issue of
having the blueprint container constantly going on and off when using update-strategy="reload",
as explained here:
https://mail-archives.apache.org/mod_mbox/karaf-user/201404.mbox/%3C535A2DF6.5080400%40i2cat.net%3E

NOTE: using update-strategy="none" makes opennaas unable to react to changes made to properties in hot.
Property changes will be applied after a reboot. Thus, it forces the user to reboot opennaas to apply changes.
Merge pull request #6 from isartcanyameres/improv/karaf2.3.5

Improv/karaf2.3.5