fix: 8080 as default gateway port in k8s

[jacobowitz]

8080 as default gateway port in k8s

Description

In K8s all Pods should use 8080 as the default port (expect monitoring and uses_before/uses_after). At the moment the Gateway is using a random port though unless specified otherwise.
The expected behavior is to respect user provided ports for the Gateway and use 8080 if there was no port specified.

My change fixes this in the Flow. Its fairly hacky/ugly, but I don't know how to do it differently really without breaking the parser. The main problem is that --port defaults to a random port, so its hard to check if the value was user set or just defaulted to. Thus I am using the kwargs in the Flow.

[github-actions]

Latency summary

Current PR yields:

• 🐎🐎🐎🐎 index QPS at 1368, delta to last 2 avg.: +14%
• 🐎🐎 query QPS at 73, delta to last 2 avg.: +7%
• 🐢🐢 avg flow time within 0.9724 seconds, delta to last 2 avg.: -15%
• 🐢🐢 import jina within 0.4123 seconds, delta to last 2 avg.: -7%

Breakdown

Version	Index QPS	Query QPS	Avg Flow Time (s)	Import Time (s)
current	1368	73	0.9724	0.4123
3.3.0	1296	77	1.1445	0.4087
3.2.10	1089	58	1.1652	0.4849

Backed by latency-tracking. Further commits will update this comment.

[codecov]

Codecov Report

Merging #4605 (5035415) into master (c342915) will increase coverage by 0.12%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #4605      +/-   ##
==========================================
+ Coverage   84.38%   84.51%   +0.12%     
==========================================
  Files         117      117              
  Lines        8479     8484       +5     
==========================================
+ Hits         7155     7170      +15     
+ Misses       1324     1314      -10     

Flag	Coverage Δ
jina	84.51% <100.00%> (+0.16%)	⬆️

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

Impacted Files	Coverage Δ
jina/__init__.py	67.46% <100.00%> (-0.39%)	⬇️
jina/orchestrate/flow/base.py	87.42% <100.00%> (+4.60%)	⬆️
jina/helloworld/fashion/helper.py	0.00% <0.00%> (-93.27%)	⬇️
jina/helloworld/fashion/my_executors.py	0.00% <0.00%> (-90.48%)	⬇️
jina/helloworld/multimodal/app.py	0.00% <0.00%> (-88.14%)	⬇️
jina/helloworld/fashion/app.py	0.00% <0.00%> (-84.62%)	⬇️
jina/helloworld/multimodal/my_executors.py	69.79% <0.00%> (-27.52%)	⬇️
jina/parsers/helloworld.py	92.30% <0.00%> (-3.85%)	⬇️
jina/clients/base/grpc.py	76.36% <0.00%> (-1.82%)	⬇️
jina/orchestrate/deployments/config/helper.py	94.73% <0.00%> (ø)
... and 33 more

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