fix: allow signup, adding fullname to signup payload

[gregfrasco]

Description

• Blocked Signup if allow signup is false
• Passed down fullname in signup payload to user service
• Replaced auth tests so they are functional. At ~75% test coverage

Checklist

• This PR can be reviewed in under 30 minutes
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have assigned reviewers to this PR.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
Report missing for 886ad701	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (886ad70)	Report Missing	Report Missing	Report Missing
Head commit (8d3597d)	874	403	46.11%

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Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#94)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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Footnotes

1. Codacy didn't receive coverage data for the commit, or there was an error processing the received data. Check your integration for errors and validate that your coverage setup is correct. ↩

[vpsx]

Tested the branch and repeated the signup sequence I did previously - can now see the full name(s) when listing users after signup, & now see an error after changing allowSignup to false and trying to sign up again 🎉 I dunno about the tests but otherwise lgtm