Improve code and Coverage of workers and redis_api modules

[mano8]

No description provided.

[mano8]

ok

[codecov]

Codecov Report

Attention: Patch coverage is 93.59504% with 31 lines in your changes missing coverage. Please review.

Files	Coverage Δ
test/test_app_block_events.py	92.68% <ø> (ø)
test/test_app_logger.py	100.00% <100.00%> (ø)
test/test_async_app_run.py	100.00% <100.00%> (ø)
test/test_redis_api.py	100.00% <100.00%> (ø)
test/test_utils.py	100.00% <100.00%> (ø)
vemonitor_m8/core/exceptions.py	100.00% <100.00%> (ø)
vemonitor_m8/core/utils.py	100.00% <100.00%> (ø)
vemonitor_m8/workers/redis/redis_cache.py	54.12% <ø> (+11.85%)	⬆️
vemonitor_m8/workers/workers_manager.py	81.72% <100.00%> (+6.19%)	⬆️
vemonitor_m8/workers/active_connectors.py	87.50% <87.50%> (ø)
... and 2 more

... and 4 files with indirect coverage changes