When wifi service is not yet up, we throw a remote exception for API
calls which have void return. Change this to only throw a remote
exception when the input params have non-default values.
This takes care of cases where some other system modules resets wifi
params as a part of their initialization sequence (which will already be the
value when the wifi service comes up, so the calls are not useful)
Bug: 140076130
Bug: 139897982
Test: atest WifiManagerTest
Change-Id: If24d5ae52f1d39d2d99a860f3dc6c5f1860fd656
bc0f7cb100