DAOS-15846 common: Use tenv for rsvc_tests

[liw]

Looks rsvc_tests should use tenv instead of unit_env.

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• Any tests skipped by the ticket being addressed have been run and passed in the PR.

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[github-actions]

Ticket title is 'Failed to build rsvc_tests with Bullseye'
Status is 'In Review'
https://daosio.atlassian.net/browse/DAOS-15846

[liw]

@daos-stack/dev-build-owners, please review this carefully, for I confess I don't really know what I'm doing here. Thank you.

[liw]

@daos-stack/daos-gatekeeper, since this is a build system fix for a unit test, I assume that it's not too rude to ignore functional testing and CI environment issues?

[mchaarawi]

@daos-stack/daos-gatekeeper, since this is a build system fix for a unit test, I assume that it's not too rude to ignore functional testing and CI environment issues?

yes. you could also use Skip-func-test: true pragma in your commit fwiw.
i still do not see a review from build owners and your comment on the PR mentions that you want to wait for a review from one? @jolivier23 ?
the commit message also needs to be updated as it cannot be a question :-)