[Pixel VPN] Apply reviewed default permissions

Pregrantting below permissions:
READ_PHONE_STATE

Flag: EXEMPT add permission pregranted in b/337725984
Bug: 373686360
Test: presubmit, manual install
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:796a10b44014235cc7632e56febc3fbb4bfdded7)
Merged-In: I2f2cf9e1bd2e60dd04afac8fdf6d1c7f5f654778
Change-Id: I2f2cf9e1bd2e60dd04afac8fdf6d1c7f5f654778
1 file changed