test: no longer directly use the sidedata config and requirements
They are on their way out, so we simply use revlogv2 in these cases.
Some test does not requires explicite request for the revlogv2 format since the
upgrade to a side-data-capable format is impled by
`exp-use-copies-side-data-changeset`.
Differential Revision: https://phab.mercurial-scm.org/D10618
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