Streamlines AAS registry

- Adds correct exception handling
- Reduces console spamming
- Moved printing ProviderException from error to debug since
  it is not necessarily an error

Change-Id: Ief4e622d206c43abeee5601ef301f23c7aec752e
Signed-off-by: Frank Schnicke <frank.schnicke@iese.fraunhofer.de>
11 files changed