Move all tests over to use Metadata instead of SingleTableMetadata and MultiTableMetadata

[lajohn4747]

Problem Description

Move all tests over to use Metadata instead of SingleTableMetadata and MultiTableMetadata. When we introduce Metadata we should make sure all tests get switched over except for compatibility tests. Metadata should have been introduced while tests covered the legacy metadata class, but once they are confirmed to work we should move over all tests (besides compatibility tests) to use Metadata instead of doubling our test suite and slowing down our testing automation jobs.

Expected behavior

Once Metadata has been merged, move over existing tests to use Metadata instead of SingleTableMetadata and MultiTableMetadata