Render task template in the agent client

[pingsutw]

TL;DR

In some cases, people want to run pyflyte-execute command in the other container orchestrator platform instead of Kubernetes by using the agent. Therefore, we should render the command before sending the request to the agent.

Type

• Bug Fix
• Feature
• Plugin

Are all requirements met?

• Code completed
• Smoke tested
• Unit tests added
• Code documentation added
• Any pending items have an associated Issue

Complete description

Render the task template in the agent plugin

Tracking Issue

NA

Follow-up issue

NA

[codecov]

Codecov Report

Merging #384 (4745c59) into master (c528bb8) will increase coverage by 1.36%.
The diff coverage is 76.92%.

❗ Current head 4745c59 differs from pull request most recent head dd6f042. Consider uploading reports for the commit dd6f042 to get more accurate results

@@            Coverage Diff             @@
##           master     #384      +/-   ##
==========================================
+ Coverage   63.00%   64.37%   +1.36%     
==========================================
  Files         154      154              
  Lines       13068    10613    -2455     
==========================================
- Hits         8234     6832    -1402     
+ Misses       4218     3164    -1054     
- Partials      616      617       +1     

Flag	Coverage Δ
unittests	?

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Files Changed	Coverage Δ
go/tasks/plugins/webapi/agent/plugin.go	71.69% <76.92%> (+3.56%)	⬆️

... and 134 files with indirect coverage changes