Energy scan sample_name metadata not getting into the database

[canismarko]

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[canismarko]

@Cathyhjj I added a test for making sure the xafs_scan and energy_scan plans handle metadata properly on the xafs_metadata branch. Would you please fix the metadata so that is uses "sample_name" instead of "sample".

[Cathyhjj]

changed and created a PR @canismarko