This change ensures that null ProxyInfo instances are honored
and reflected in the actual VpnProfile.
Ikev2VpnProfiles incorrectly set ProxyInfo as an empty instance
when provided with a null ProxyInfo. Other components in the
system sometimes have different behavior if presented with an
empty ProxyInfo instead of a null one.
Bug: 244281603
Test: atest FrameworksNetTests
Test: Manual testing with VPN validation enabled
Change-Id: I67ee2aa5c96dc22ba8fcd2be3fd4c090dec20697
(cherry picked from commit 29348dbfca)
Merged-In: I67ee2aa5c96dc22ba8fcd2be3fd4c090dec20697
9a80121f6b