Improve code coverage for HttpClientProvider

Exercise some uncovered branches related with retrying requests while
reducing the total time it takes to run the tests.

Change-Id: If0a50e4b1b2a3acf98a053b607e27417d6da197f
1 file changed
tree: 53de2f87a67fb4f98470230be6ab376b01d81d86
  1. .buckconfig
  2. .gitignore
  3. BUCK
  4. lib/
  5. src/