V0.2 vm oversub docs

[kyu-kuanwei]

Description

1. Add oversubscription docs.
2. Add overload docs.

Linked issue(s)/Pull request(s)

• issue_number

Type of Change

• Non-breaking bug fix
• Breaking bug fix
• New feature
• Test
• Doc update
• Docker update

Related Component

• Simulation toolkit
• RL toolkit
• Distributed toolkit

Has Been Tested

• OS:
  • Windows
  • Mac OS
  • Linux
• Python version:
  • 3.6
  • 3.7
• Key information snapshot(s):

Needs Follow Up Actions

• New release package
• New docker image

Checklist

• Add/update the related comments
• Add/update the related tests
• Add/update the related documentations
• Update the dependent downstream modules usage

[codecov-io]

Codecov Report

Merging #256 (47e41db) into v0.2 (d51b192) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             v0.2     #256   +/-   ##
=======================================
  Coverage   64.31%   64.31%           
=======================================
  Files         111      111           
  Lines        5411     5411           
=======================================
  Hits         3480     3480           
  Misses       1931     1931           

Flag	Coverage Δ
unittests	64.31% <ø> (ø)

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