KeyStore: stop using state()

Change-Id: Ia8fc945666c59c0b9a9bd6f890cc2a6b8859e1d4
Fix Settings app crash after enabled multi-user

Bug: 8128225
Change-Id: I2918a5ec36e861a1ce4b2e67cf7607929732a7bf
Update enterprise API usage

Also, remove the unnecessary keystore lock/unlock checks since these
are now controlled at lockscreen

Change-Id: If65c4029d4cf2b8377fbc3512c9f691572125995
Allow only valid EAP configs

We allow configuring all possible EAP fields today even though
some of the configs make no sense and will not result in a
successful connection.

Allow only support configs for various EAP methods

Change-Id: I2e3e8d4d6203acb2eac8cd645df39e1a9ca579ab
Fix EAP field display for a new network

We now hide certain EAP fields based on the type chosen. For a
new network, we should set a default and handle this the same
way

Change-Id: I9c8605694ba51bc588a49f711dcf31517ea3f6e4
Use updated enterprise API

Change-Id: If41fad5fae5864555bb1de3fc99130682b1cdff1
Prevent cursor from causing global reference leaks.

To fix this the ContentQueryMap needs to be closed
when onStop is called so any global references can
be reclaimed.

Change-Id: I0c679c10b0d75ab0aac2fe499563c57d934e318a
avoid stopping app in case of accessing empty db

When accessing empty database, Setting App is stopped, sometimes.
To avoid stopping app, check null for cursor

Change-Id: I71ec067f502d12a9215a9abdbe9e23fc07af17bb