fixes for the OTEL prometheus meter exporter, prometheus exporter server and auto reloads on code changes

[kalaspuff]

• Fixes an issue where the OTEL prometheus meter provider would start the prometheus exporter server although the service was not instrumented if an OTEL meter was created outside of the service' auto instrumentation scope. On hot reloads of code changes this would also cause the prometheus exporter server to be started multiple times, causing the service to fail to restart due to a port conflict.
• Fixes an issue in OTEL prometheus exporter target info where the service_name and job could be incorrectly set to "unknown_service" if an OTEL meter was created before the service was fully initialized and instrumented.
• Added jwcrypto to the list of safe modules that won't be cleared during the hot auto reload on code changes.
• Restricted version constraint of OTEL API / OTEL SDK to 1.27.0 until support for exemplar builder is fully implemented into tomodachi's aggregators.

[codecov]

Codecov Report

Attention: Patch coverage is 44.82759% with 16 lines in your changes missing coverage. Please review.

Project coverage is 73.91%. Comparing base (ebadd2e) to head (50ac0ca).
Report is 10 commits behind head on master.

Files with missing lines	Patch %	Lines
tomodachi/opentelemetry/prometheus.py	37.50%	10 Missing ⚠️
tomodachi/opentelemetry/middleware.py	60.00%	4 Missing ⚠️
tomodachi/transport/amqp.py	0.00%	1 Missing ⚠️
tomodachi/transport/http.py	0.00%	1 Missing ⚠️

❌ Your patch status has failed because the patch coverage (44.82%) is below the target coverage (60.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2075      +/-   ##
==========================================
- Coverage   73.98%   73.91%   -0.07%     
==========================================
  Files          53       53              
  Lines        8095     8112      +17     
==========================================
+ Hits         5989     5996       +7     
- Misses       2106     2116      +10     

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