fix: gateway load yaml config

[alaeddine-13]

closes: #5677

[codecov]

Codecov Report

Merging #5678 (da30f41) into master (4e388e4) will increase coverage by 0.44%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #5678      +/-   ##
==========================================
+ Coverage   87.89%   88.33%   +0.44%     
==========================================
  Files         132      132              
  Lines       10323    10325       +2     
==========================================
+ Hits         9073     9121      +48     
+ Misses       1250     1204      -46     

Flag	Coverage Δ
jina	88.33% <100.00%> (+0.44%)	⬆️

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

Impacted Files	Coverage Δ
jina/serve/runtimes/gateway/__init__.py	98.41% <100.00%> (+0.05%)	⬆️
jina/orchestrate/deployments/__init__.py	90.48% <0.00%> (-0.15%)	⬇️
jina/clients/mixin.py	97.45% <0.00%> (+0.84%)	⬆️
jina/serve/runtimes/gateway/request_handling.py	99.06% <0.00%> (+0.93%)	⬆️
jina/clients/base/websocket.py	90.47% <0.00%> (+0.95%)	⬆️
jina/clients/base/http.py	96.00% <0.00%> (+1.33%)	⬆️
jina/logging/logger.py	92.48% <0.00%> (+1.50%)	⬆️
...ina/serve/runtimes/gateway/graph/topology_graph.py	99.49% <0.00%> (+1.52%)	⬆️
jina/clients/base/grpc.py	91.74% <0.00%> (+2.75%)	⬆️
jina/serve/runtimes/gateway/http/app.py	97.12% <0.00%> (+5.03%)	⬆️
... and 4 more

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