Move VPN JNI to the bottom of srcs

This is a no-op change in preparation of a bigger topic to create the
tethering+connectivity APEXes. This change allows the topic to avoid
merge conflicts between branches.

Bug: 171540887
Test: m
Merged-In: I3ab497f2133c9020131ca4392f34aedb8da99cc9

Change-Id: I3ab497f2133c9020131ca4392f34aedb8da99cc9
1 file changed