adjust fixtures for Keg 0.7.0 changes

[rsyring]

can no longer assume an application context is available

[codecov]

Codecov Report

Merging #6 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master       #6      +/-   ##
==========================================
+ Coverage   99.88%   99.88%   +<.01%     
==========================================
  Files          15       15              
  Lines         873      887      +14     
==========================================
+ Hits          872      886      +14     
  Misses          1        1

Impacted Files	Coverage Δ
keg_auth/testing.py	100% <100%> (ø)	⬆️
keg_auth/tests/test_cli.py	100% <100%> (ø)	⬆️
keg_auth/tests/test_mail.py	100% <100%> (ø)	⬆️
keg_auth/tests/test_model.py	100% <100%> (ø)	⬆️
keg_auth/tests/test_views.py	100% <100%> (ø)	⬆️
keg_auth/tests/test_auth_manager.py	100% <100%> (ø)	⬆️
keg_auth/tests/conftest.py	100% <100%> (ø)	⬆️

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[nZac]

Original issue: level12/keg#90

This should not be merged.