base

Refactor WifiEnterpriseConfig and move service part in WifiConfigStore

This change moves the code related to 'importing' the configuration
in supplicant and keystore from WifiEnterpriseConfig class to
WifiConfigStore class. This would allow moving system classes
to server package.


Bug: 9989922
Change-Id: Id96f34bb5d16ef192e9174d9caa867bdfdacf803