Use openstudio 3.9.0

[vtnate]

• CI still needs to be updated, once an official version of OS3.9 is released on DockerHub.
• Once a new patch of extension-gem is released, point to that in gemspec

[wenyikuang]

I think the only thing need change is we may need have a "real" measure in the /lib/measures/

[coveralls]

Pull Request Test Coverage Report for Build 12418703188

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 83.333%

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Totals
Change from base Build 12406865287:	0.0%
Covered Lines:	20
Relevant Lines:	24

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💛 - Coveralls