[KA14] add cts for keepalive limit test.

Per SDK requirement, OEM is required to support minimum number of
concurrent keepalives. Implement CTS to verify this.

Bug: 129371366
Test: atest android.net.cts
      .ConnectivityManagerTest#testSocketKeepaliveLimit
      --generate-new-metrics 10

(Clean cherry-pick of aosp/937026)

Change-Id: I8be89116bed5c4dedb2ca42b6d633aa9e8c6a49a
Merged-In: I8be89116bed5c4dedb2ca42b6d633aa9e8c6a49a
1 file changed
tree: f39c2fe332a1b0a72a559238110dc24005f5eecc
  1. tests/