Move sal-remote to sal-rest-connector

Move sal-remote to sal-rest-connector

This module is only used by sal-rest-connnector bundle,
moreover, it is intended to create notification stream
and/or register a data change event which is done using
RESTCONF, thus it make sense to move it to the appropriate
project.
I beleive this is a leftover of the migration that happened
when controller was splitted out..

This is the associated patch in Netconf project:
https://git.opendaylight.org/gerrit/#/c/44575/

Change-Id: Ied4bb2b4b04d36298ca14f9f7926e4aa52de7be2
Signed-off-by: Alexis de Talhouët <adetalhouet@inocybe.com>