Add Replicator's config files to etc on startup

Add Replicator's config files to etc on startup

Currently the configuration files don't reside inside
the etc folder when the bundle starts up. They either
have to be created manually or by editing via Karaf
Config CLI. This makes it more difficult for the
user to see the options and modify them as needed.

Add the files directly to the bundle stating all the
options and filled with default value. Then load them
inside the etc folder on bundle startup.

Signed-off-by: Tibor Král <tibor.kral@pantheon.tech>
Change-Id: If55316d89dcb5570d4f9f8a5b30fd5310ad90a48