[Feature] sc-21678 Add options in values to enforce update password

[kentwelcome]

PR checklist

• [x] Ensure you have added or ran the appropriate tests for your PR.
• [x] DCO signed

What type of PR is this? Feature

What this PR does / why we need it:

• Can configure default user email by config values
• Can configure default user enforce update password

Which issue(s) this PR fixes: SC-21678

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov[bot]]

Codecov Report

Merging #556 (1f37b97) into master (2fcb159) will decrease coverage by 0.06%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #556      +/-   ##
==========================================
- Coverage   77.67%   77.61%   -0.07%     
==========================================
  Files           8        8              
  Lines        1626     1626              
==========================================
- Hits         1263     1262       -1     
- Misses        363      364       +1     

Flag	Coverage Δ
unittests	77.61% <ø> (-0.07%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...t/scripts/jupyterhub/config/jupyterhub_profiles.py	61.56% <0.00%> (-0.12%)	:arrow_down:

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[popcornylu]

LGTM