Release azure-cli 2.0.4

[derekbekoe]

No description provided.

[azuresdkci]

Reviewers, please verify the following for this PR:

• The PR title has format Release <component-name> <version>.
• setup.py has been modified with the same version as in the PR title.
• HISTORY.rst has been modified with appropriate release notes.
• If releasing azure-cli or azure-cli-core, __version__ defined in __init__.py should also be modified to match.

[azuresdkci]

Started releasing azure-cli 2.0.4...

[azuresdkci]

Release of 'azure-cli' with version '2.0.4' successful. View at https://pypi.python.org/pypi/azure-cli/2.0.4.

[azuresdkci]

GitHub release created. https://github.com/Azure/azure-cli/releases.

[codecov-io]

Codecov Report

Merging #3094 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master    #3094   +/-   ##
=======================================
  Coverage   70.72%   70.72%           
=======================================
  Files         357      357           
  Lines       22906    22906           
  Branches     3526     3526           
=======================================
  Hits        16201    16201           
+ Misses       5610     5607    -3     
- Partials     1095     1098    +3

Impacted Files	Coverage Δ
src/azure-cli/azure/cli/__init__.py	100% <100%> (ø)	⬆️
...-cli-role/azure/cli/command_modules/role/custom.py	35.74% <0%> (ø)	⬆️
src/azure-cli-core/azure/cli/core/util.py	66.42% <0%> (ø)	⬆️
...dback/azure/cli/command_modules/feedback/custom.py	34.69% <0%> (ø)	⬆️

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