Correct value of supported keepalive count for cellular

Cellular only supports 1 keepalive connection so correct the default
supported value to 1.

Bug: 134037217
Test: - atest FrameworksNetTests
      - atest android.net.cts.ConnectivityManagerTest \
        #testSocketKeepaliveLimitTelephony

Change-Id: Ia3761f2e78d54866bb2e156d58004396bbc8adc3
1 file changed
tree: eef47fa5b0f47685f3c96c34358753820ce8bc80
  1. core/
  2. services/
  3. tests/