[Network Filtering] Add Network Filtering support

Add Network Filtering support in dLeyna.

Add API to the core library to manage the GUPnPWhiteList object

Manage 2 new settings:
1 - netf_enabled (boolean): To activate or deactivate the network filtering
2 - netf_entries (str list): List of supported network

Signed-off-by: Ludovic Ferrandis <ludovic.ferrandis@intel.com>
[Core] Fix GLib Deprecated warnings (#20)

Fix issue #20: <https://github.com/01org/dleyna-core/issues/20>

Signed-off-by: Ludovic Ferrandis <ludovic.ferrandis@intel.com>
[Coding Convention] Checkpatch

Signed-off-by: Ludovic Ferrandis <ludovic.ferrandis@intel.com>
[Release] Version 0.2.2

Signed-off-by: Regis Merlino <regis.merlino@intel.com>
[Configuration] Post-release version bump

Signed-off-by: Regis Merlino <regis.merlino@intel.com>