Fix dynamic module support bug https://github.com/firebase/firebase-android-sdk/issues/3860

[VinayGuthal]

Move from monolithic to partitioned apis at https://developer.android.com/reference/com/google/android/play/core/release-notes#partitioned-apis

Fixes #3860

[github-actions]

Unit Test Results

0 files   -    392  0 suites   - 392   0s ⏱️ - 17m 22s
0 tests  - 4 700  0 ✔️  - 4 676  0 💤  - 22  0 ❌  - 2 
0 runs   - 4 716  0 ✔️  - 4 692  0 💤  - 22  0 ❌  - 2 

Results for commit 450f198. ± Comparison against base commit 3c323f2.

♻️ This comment has been updated with latest results.

[google-oss-bot]

Coverage Report ¹

Affected Products

No changes between base commit (f3f2f4c) and merge commit (018f68e).

Test Logs

• Base (f3f2f4c): https://android-ci.firebaseopensource.com/view/gcs/android-ci/logs/postsubmit-check-coverage/1544725469771862018
• Merge (018f68e): https://android-ci.firebaseopensource.com/view/gcs/android-ci/pr-logs/pull/firebase_firebase-android-sdk/3870/check-coverage-changed/1544733018197856259

Notes

• Commit (018f68e) is created by Prow via merging PR base commit (f3f2f4c) and head commit (450f198).
• Run gradle <product>:checkCoverage to produce HTML coverage reports locally. After gradle commands finished, report files can be found under <product-build-dir>/reports/jacoco/.

1. https://storage.googleapis.com/firebase-sdk-metric-reports/5yVA6SL2Xa.html

[google-oss-bot]

Size Report ¹

Affected Products

• firebase-dynamic-module-support

  Type	Base (f3f2f4c)	Merge (018f68e)	Diff
  aar	5.85 kB	5.88 kB	+22 B (+0.4%)
  apk (aggressive)	145 kB	94.1 kB	-50.9 kB (-35.1%)
  apk (release)	802 kB	742 kB	-59.7 kB (-7.4%)

Test Logs

• Base (f3f2f4c): https://android-ci.firebaseopensource.com/view/gcs/android-ci/logs/postsubmit-binary-size/1544725469771862017
• Merge (018f68e): https://android-ci.firebaseopensource.com/view/gcs/android-ci/pr-logs/pull/firebase_firebase-android-sdk/3870/binary-size/1544733018197856258

Notes

• Commit (018f68e) is created by Prow via merging PR base commit (f3f2f4c) and head commit (450f198).

1. https://storage.googleapis.com/firebase-sdk-metric-reports/Sv9DwxGRh6.html

[rlazo]

Reference the issue in the description instead of the title so it can be tracked by github.

[vkryachko]

Can you sync your branch to current master(specifically till after #3871), so that tests actually run for this PR?

[rlazo]

rm empty line