Use a prebuilt libcurl and libssl (avoid host)

Even though we only link in libcurl and libssl for cargo, and don't
actually use it, we still want to be hermetic about it. Use the libcurl
and libssl available from the android-emulator prebuilts.

Bug: 129701460
Change-Id: I0736a3cd846c6fb49cff8b1cc6bd89ea92fdcc61
2 files changed
tree: 908edba5d2244e134277cc4a379d6f8922760f91
  1. build.py
  2. config_toml.py
  3. paths.py