[LSC] Add LOCAL_LICENSE_KINDS to packages/modules/Cronet

Added SPDX-license-identifier-Apache-2.0 to:
  Android.bp
  apex/Android.bp
  apex/testing/Android.bp
  tests/apitest/Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: If401e28b9f36512babfcb9a0e3a11b3c6e297aba
4 files changed