Ignore NetworkStatsIntegrationTest up to T

Test: atest NetworkStackCoverageMtsConfigTests:android.net.NetworkStatsIntegrationTest
Bug: 259632210

(cherry picked from https://android-review.googlesource.com/q/commit:92c461cc8d5910c7fa263daf5e6949dc8267d618)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:7f6b4ab55860ae873fec1f6c575c4d8e21012ae4)
Merged-In: Icd37568e4b59efba11a7d1652c1b37ac11b9e3c7
Change-Id: Icd37568e4b59efba11a7d1652c1b37ac11b9e3c7