Updated git submodules

Updated git submodules

Project: netconf master 50351b4cb37a1998cfaef53ff584aeb767c25f50

Merge "Bug 8153: Enforce check-style rules for netconf - sal-netconf-connector"

Bug 8153: Enforce check-style rules for netconf - sal-netconf-connector

    Organize Imports for Checkstyle compliance.
    Checkstyle compliance: line length.
    Checkstyle compliance: various types of small changes.
    Checkstyle compliant Exception handling.
    Checkstyle final clean up & enforcement.
    Add the fail on violation flag into the pom.xml .

Change-Id: I741ea586178981d6c66533259619c27c24bbd744
Signed-off-by: matus.kubica <matus.kubica@pantheon.tech>