[rtt_test_utils] Add retries to scan for networks

Added the following changes
1. rtt_test_utils#scan_networks: Add retries to ensure a network is found
in scan
2. RangeApNonSupporting11McTest: lci_reference and lcr_refence lists
will be empty if the AP doesn't support 802.11mc

Bug: 138910260
Test: Verified changes on rvc-release

Change-Id: Ie1fe5e63304066ab52b56497ee29fbcd8076d66b
2 files changed
tree: 763635375eea2f1356a42e083b2ccc08e9591448
  1. acts/
  2. tools/
  3. wts-acts/
  4. Android.mk
  5. OWNERS
  6. PREUPLOAD.cfg