p2p: avoid false alarm in service discovery test

Because P2P would switch its state between SCAN and SEARCH,
there are chances to miss service discovery request and cause a false alarm
due to empty service list.

If there is no service found, try again to ensure it is not a false
alarm.

Bug: 123528009
Test: act.py -c \
      tools/test/connectivity/acts/tests/google/wifi/p2p/config/wifi_p2p.json \
      -tc WifiP2pLocalServiceTest -ci 999

Change-Id: I6a6fd83d0ef10c3ad035a219851341bff6919845
2 files changed
tree: 09029775d43248e91187b6180c560d45f7f2f53e
  1. acts/
  2. tools/
  3. wts-acts/
  4. Android.mk
  5. PREUPLOAD.cfg