test: complete pod tests

[bwanglzu]

this pr should make pods/__init__.py coverage close to 100%.

[codecov]

Codecov Report

Merging #2164 (83f1f08) into master (2940582) will increase coverage by 1.59%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2164      +/-   ##
==========================================
+ Coverage   88.86%   90.46%   +1.59%     
==========================================
  Files         211      211              
  Lines       11263    11263              
==========================================
+ Hits        10009    10189     +180     
+ Misses       1254     1074     -180     

Flag	Coverage Δ
daemon	50.22% <ø> (ø)
jina	90.92% <ø> (+1.71%)	⬆️

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Impacted Files	Coverage Δ
jina/helper.py	83.65% <0.00%> (+0.84%)	⬆️
jina/types/message/__init__.py	88.20% <0.00%> (+1.53%)	⬆️
jina/drivers/control.py	95.08% <0.00%> (+1.63%)	⬆️
jina/clients/base.py	83.33% <0.00%> (+1.66%)	⬆️
jina/peapods/runtimes/jinad/client.py	82.48% <0.00%> (+2.18%)	⬆️
jina/docker/hubio.py	84.11% <0.00%> (+2.23%)	⬆️
jina/drivers/convertdriver.py	97.22% <0.00%> (+2.77%)	⬆️
jina/flow/mixin/crud.py	89.65% <0.00%> (+3.44%)	⬆️
jina/peapods/runtimes/jinad/__init__.py	95.91% <0.00%> (+4.08%)	⬆️
jina/clients/helper.py	100.00% <0.00%> (+4.54%)	⬆️
... and 11 more

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[github-actions]

Latency summary

Current PR yields:

• 😶 index QPS at 1115, delta to last 3 avg.: +0%
• 😶 query QPS at 18, delta to last 3 avg.: -4%

Breakdown

Version	Index QPS	Query QPS
current	1115	18
1.0.8	1111	18
1.0.7	1103	18

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