Add SchemaSourceRegistration list to NetconfConnectorDTO
When a NetconfDevice is initialized, we keep track of it via
NetconfConnectorDTO. As a device actually can have some YANG Library
source attached to it, we are registering them as well, but we are
failing to unregister them.
Keep the registration list in the DTO and route close requests
towards it -- allowing us to also remove the registrations.
JIRA: NETCONF-675
Change-Id: Id1d5fb2ff23aad766273e22d5f6f6639300fb3a5
Signed-off-by: PeterSuna <peter.suna@pantheon.tech>
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>