Use configured middleware address for middleware authentication

[sainak]

Proposed Changes

Use configured middleware address for middleware authentication

@coronasafe/code-reviewers

Merge Checklist

• Tests added/fixed
• Update docs in /docs
• Linting Complete

[codecov-commenter]

Codecov Report

Base: 55.68% // Head: 55.63% // Decreases project coverage by -0.05% ⚠️

Coverage data is based on head (7e11457) compared to base (382346a).
Patch coverage: 9.09% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1144      +/-   ##
==========================================
- Coverage   55.68%   55.63%   -0.06%     
==========================================
  Files         177      177              
  Lines        8773     8783      +10     
  Branches     1505     1509       +4     
==========================================
+ Hits         4885     4886       +1     
- Misses       3836     3845       +9     
  Partials       52       52              

Impacted Files	Coverage Δ
config/authentication.py	34.56% <0.00%> (-0.88%)	⬇️
care/facility/api/serializers/facility.py	75.71% <12.50%> (-8.16%)	⬇️

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[vigneshhari]

Are we no longer pointing to local if a middleware address is not present?

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[sainak]

Are we no longer pointing to local if a middleware address is not present?

This change would give more info to the admin about whats going wrong.
we were pointing it to local for testing, we can still set the value to localhost in the configurations