Bump netconf to 2.0.11
Bump netconf to 2.0.11

Adopt latest release.

Change-Id: I8781955f9c98a80d4b868a8ae6dc6de7ce3fbbc1
Signed-off-by: Robert Varga <91ae5aa8c7a9f7e57b701db766e23e544aaa6ae9@pantheon.tech>

opendaylight/bgpcep