Fix sdewan reconcile trigger

Fix sdewan reconcile trigger

When mwan3Conf changes, the mwan3Conf controller update the sdewan
instance status to trigger the sdewan reconcile. Before this patch, we
update only the status field `IsApplied=false`. It could happen that the
field `IsApplied` was already false, if this is the case sdewan
reconcile will not be triggered. Because the sdewan CR is not changed.
This patch is to add another field in sdewan status, to make sure sdewan
reconcile is triggered once the mwan3Conf changes.

Signed-off-by: chengli3 <cheng1.li@intel.com>
Change-Id: I8f01733c373326b9167342118fd166834a7a8c45