stop abusing netd's DAC override on prog accesses by using R/O fetch am: 251b3ee12d am: 6f8117d218

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/netd/+/11920239

Change-Id: I2712adc6ff36d488c75875d2f6b0664d01d5fa5c