Added support of Multiple same SSIDs including band steering.

Added support of Multiple same SSIDs including band steering.

When there are multiple APs with the same SSID and security,
this patch support below features:
1. If AP does not respond to probe request during connection
procedure, connman tries to connect with the next available BSSID
before sending disconnected event to application.

2. If connection with AP is failed during association due to
ASSOC_REJECT, connman tries to connect with the next available BSSID
before sending disconnected event to application.

Change-Id: Ie80939bd013a12b9c88e91a1fd5a05fbb57c1833
Signed-off-by: Niraj Kumar Goit <niraj.g@samsung.com>