ci(HMS-1947): Parameterize post-deploy tests for both stage and prod

[tpapaioa]

In preparation for adding prod post-deploy tests, this PR parameterizes the post-deploy test template to support both stage and prod environments. Currently the only parameters are the dynaconf environment and the pytest marker expression used by pytest to determine both the environment and the tests to run against it.

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[mshriver]

/retest

[mshriver]

The bonfire deploy failed via timeout in the pr check, CJI template looks fine (and isn't even used by pr check)