BUG-672 Remove deprecated plaintext/autodetect persister adapters.

Xml adapters are the default adapters now for configuration persister.

Change-Id: Ie8eb41520671bb00503a340f6b4b55ebe1ef7bf1
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>
BUG-672 Add includeExtensions property to Xml directory persister adapter.

This property allows to filter initial config files by extension.
Property supports multiple extensions separated by ','.
This property is optional, and if not present, all files are picked up regardless of their extension.

Change-Id: I6029bd48fa3b576006a4409d8f19e0c4956de036
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>
Merge changes I6029bd48,Ie8eb4152

* changes:
  BUG-672 Add includeExtensions property to Xml directory persister adapter.
  BUG-672 Remove deprecated plaintext/autodetect persister adapters.