add test that chia is installed when in ci

[altendky]

Purpose:

We intend to be testing the installed code, not the source. Just adding an explicit check that we are.

Current Behavior:

New Behavior:

Testing Notes:

[coveralls-official]

Pull Request Test Coverage Report for Build 7631773626

Warning: This coverage report may be inaccurate.

We've detected an issue with your CI configuration that might affect the accuracy of this pull request's coverage report.
To ensure accuracy in future PRs, please see these guidelines.
A quick fix for this PR: rebase it; your next report should be accurate.

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.1%) to 90.598%

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Totals
Change from base Build 7413627739:	0.1%
Covered Lines:	94988
Relevant Lines:	104804

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💛 - Coveralls