Default auth parameters in config.ini.

    Hardcoded default username and password for ssh authenticaton moved from AuthProvider.java to config.ini
    IUSerManager in AuthProvider.java is not static anymore.

Change-Id: Ia4fd2cddf42d17842869d599d645881b77d2afbd
Signed-off-by: Martin Bobak <mbobak@cisco.com>
Merge "Default auth parameters in config.ini."