test: Updating older cross-build smoke tests (iOS, Android)

[thesuzerain]

This is a draft PR bringing in smoke tests scripts for building application-services against various targets (Android and iOS here, HNT to come, see below). It deprecates some older similar tests that are very out of date, and remakes them with up-to-date building methods (and more test flexibility).

I used existing helpers from the existing smoke tests where possible.

See: build instructions for iOS and build instructions for Fenix for context about the steps.

This currently makes no breaking changes. It is also thought that the deprecated smoke tests have long fallen out of use.

Remaining work:

We want to build against HNT if possible as well, but currently, HNT doesn’t have a system for building against a local a-s like the other two do. There are a couple possibilities I've explored (eg: redirecting cargo paths) but none that have been trivial. As it may require non-test-script changes, I would propose we do that in another PR.

There is also a good amount of iOS and Android tests that fail naturally (seemingly even in clean unrelated builds), and most possible regressions in a-s don’t cause a build or test failure, so it may be prudent in the future to make to extend iOS/Android tests to cover a-s behaviour specifically now that we have these scripts.

Pull Request checklist

• Breaking changes: This PR follows our breaking change policy
  • This PR follows the breaking change policy:
    • This PR has no breaking API changes, or
    • There are corresponding PRs for our consumer applications that resolve the breaking changes and have been approved
• Quality: This PR builds and tests run cleanly
  • Note:
    • For changes that need extra cross-platform testing, consider adding [ci full] to the PR title.
    • If this pull request includes a breaking change, consider cutting a new release after merging.
• Tests: This PR includes thorough tests or an explanation of why it does not
• Changelog: This PR includes a changelog entry in CHANGELOG.md or an explanation of why it does not need one
  • Any breaking changes to Swift or Kotlin binding APIs are noted explicitly
• Dependencies: This PR follows our dependency management guidelines
  • Any new dependencies are accompanied by a summary of the due diligence applied in selecting them.

[thesuzerain]

I don't love using regex here but given how often this artifact file is updated (with hashes, etc) it doesn't really seem possible to use a fixture for it.

[jonesetc]

Looks outdated? There is a --firefox-dir FIREFOX_DIR, but no --use-local-repo or --remote-repo-url

[jonesetc]

Was able to force an android regression in testing with this patch:

diff --git a/components/ads-client/src/lib.rs b/components/ads-client/src/lib.rs
index 2088ee16c..1279423e9 100644
--- a/components/ads-client/src/lib.rs
+++ b/components/ads-client/src/lib.rs
@@ -72,10 +72,10 @@ impl MozAdsClient {
     #[uniffi::method(default(options = None))]
     pub fn record_impression(
         &self,
-        impression_url: String,
+        impression_url_foo: String,
         options: Option<MozAdsCallbackOptions>,
     ) -> AdsClientApiResult<()> {
-        let url = AdsClientUrl::parse(&impression_url).map_err(|e| {
+        let url = AdsClientUrl::parse(&impression_url_foo).map_err(|e| {
             ComponentError::RecordImpression(CallbackRequestError::InvalidUrl(e).into())
         })?;
         let ohttp = options.map(|o| o.ohttp).unwrap_or(false);

and running automation/build_against_fenix.py --prefix-ff fenix --prefix-as ads-client --firefox-dir ../firefox produced:

...
> Compiling firefox with mozconfig with `./gradlew fenix:assembleDebug` (mozconfig=`/var/folders/lr/zvwpm2dn5n133j0st4z6n6c00000gn/T/tmphrsr28ca-test-fenix/mozconfig_android`)...
e: file:///.../firefox/mobile/android/android-components/components/service/mars/src/main/java/mozilla/components/service/mars/MozAdsUseCases.kt:50:70 No parameter with name 'impressionUrl' found.
e: file:///.../firefox/mobile/android/android-components/components/service/mars/src/main/java/mozilla/components/service/mars/MozAdsUseCases.kt:50:70 No value passed for parameter 'impressionUrlFoo'.