Return cause code and retrying time when force close in bringing a
tunnel up.

When force close, iwlan return NO_ERROR without any link/address info,
so Framework considers it is a permanent failure resulting in losing
ims service. Let IwlanDataService return a cause code and retrying time,
so Framework will retry it later.

Bug: 194176024
Test: atest IwlanTests, on device wfc/handover, on device turn off wifi button during incall handover to iwlan

Change-Id: Ibb9bed6261eae26a9eda81f47f8cb6f449347b83
1 file changed