Samuel Tan fffc5936b9 Disable configuring EAP-TLS without user certificate.
Disallow configuring EAP-TLS without a user certificate,
since this is probably an invalid configuration.

Also:
- change the wording of the default option for
  EAP CA and user certificates from "(unspecified)" to
  "Please select", to make it obvious that a choice
  needs to be made to proceed.
- Fix style issues found in WifiConfigController.java by checkstyle.py.

BUG: 26686071
Change-Id: I7ccfdf40db97328e3297a03cc43033ff2428980f
TEST: Save option is grayed out when configuring EAP-TLS network
TEST: while leaving "User Certificate" left at "Please select".
2016-01-27 14:10:25 -08:00
2015-04-13 09:21:39 -07:00
2016-01-25 15:24:29 -05:00
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