Wi-Fi DPP code refine
1. call Activity#setResult only for RESULT_OK case
2. refine @VisibleForTesting usage
remove redundant assignment otherwise = PRIVATE
set all @VisibleForTesting annotated methods package scope
3. rename WifiQrCode#SECURITY_WPA to WifiQrCode#SECURITY_WPA_PSK
Bug:
120645817
Test: atest WifiQrCodeTest
atest WifiDppConfiguratorActivityTest
atest WifiDppEnrolleeActivityTest
atest WifiDppQrCodeGeneratorFragmentTest
atest WifiDppQrCodeScannerFragmentTest
atest WifiNetworkListFragmentTest
atest WifiDppChooseSavedWifiNetworkFragmentTest
Change-Id: Id5de7eadc73185716422fc0d197f82bdd025ce45