Master branch updates

[chapulina]

Part of gazebo-tooling/release-tools#416

Summary

Update all usage of master

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge

[codecov]

Codecov Report

Merging #221 (9db93f1) into ign-physics2 (ef26933) will not change coverage.
The diff coverage is n/a.

@@              Coverage Diff              @@
##           ign-physics2     #221   +/-   ##
=============================================
  Coverage         83.14%   83.14%           
=============================================
  Files               106      106           
  Lines              3998     3998           
=============================================
  Hits               3324     3324           
  Misses              674      674           

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