Exempt Android TV from lockscreen check

 Some devices (AndroidTV) do not support lockscreen feature.
 Skip CTS test that requires secure lockscreen if managed profiles are supported.

Test: atest com.android.cts.devicepolicy.ManagedProfileTest#testManagedProfilesSupportedWithLockScreenOnly

Bug: 149827369
Bug: 152830725
Change-Id: Id23e8eeff67aae59a6e7484569c829b4a1bb2e85