feat(auth, multi-tenant): add multi-tenant (tenantID) support

[xianlinbox]

Description

When I working on the firebase auth, I found I can't set tenant id which is quite critical for working with Google Identity platform. In the repository discussion channel. there are 2 questions related with this also.

1. Set tenantID on auth() #4462
2. Multi Tenant Support #4964

Then I checked the Firebase iOS SDK, which actually provided tenantId for user to set it. So I created this PR to open this capability to React native Lib users.

Related issues

No

Release Summary

Support set tenant it in Firebase auth module.

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
  • Yes
• My change supports the following platforms;
  • Android
  • iOS
• My change includes tests;
  • e2e tests added or updated in packages/\*\*/e2e
  • jest tests added or updated in packages/\*\*/__tests__
• I have updated TypeScript types that are affected by my change.
• This is a breaking change;
  • Yes
  • No

Test Plan

yarn tests:jest

Test Suites: 8 passed, 8 total
Tests: 1 skipped, 95 passed, 96 total
Snapshots: 0 total
Time: 20.6 s

---

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[codecov]

Codecov Report

Merging #5019 (326942e) into master (d2b0074) will decrease coverage by 0.01%.
The diff coverage is 85.72%.

@@            Coverage Diff             @@
##           master    #5019      +/-   ##
==========================================
- Coverage   89.09%   89.09%   -0.00%     
==========================================
  Files         109      109              
  Lines        3721     3728       +7     
  Branches      348      350       +2     
==========================================
+ Hits         3315     3321       +6     
  Misses        365      365              
- Partials       41       42       +1     

[xianlinbox]

@mikehardy here is the new PR with my correct email, I will sign CLA here. Thanks very much for reviewing the code.

[Ehesp]

Awesome thanks for this.

[mikehardy]

Thank you! We still have some underlying CI issues which are very new - just last couple days - I have hopes of triaging those so this is fully green but there should be nothing wrong with this PR as it is, I'm planning on merging it - cheers @xianlinbox

[mikehardy]

There was an iOS compile error inadvertently hidden by the way we were calling xcodebuild

I just added these changes and pushed to your branch:

• rebased to current master
• fixed the incorrect use of unix pipes that hid compile errors
• fixed the compile error
• exposed the user.tenantId property for those that use multi-tenant
• added a simple E2E test that will always run, and some commented out ones that implementors may play with if they have access to a live firebase project with multi-tenant setup (we do not)

If it passes CI I think it will be good to go

[mikehardy]

This is out as of v11.1.0 - please test and if there's anything wrong let us know - cheers!

[kwong70]

Do we need to manually set the tenantId or is it auto-populated when a user signs in?