test: add custom partition mount points to raw image test case

[mcattamoredhat]

This pull request includes:

This PR adds custom partitions to blueprint of edge-raw-image, making use of the example comments at RHEL 9: Filesystem customizations for edge-raw-image

A playbook task has been included to check the custom partitions using lvdisplay

• [ ] adequate testing for the new functionality or fixed issue
• [ ] adequate documentation informing people about the change such as
  • [ ] submit a PR for the guides repository if this PR changed any behavior described there: https://www.osbuild.org/guides/

[say-paul]

lets hold this off until https://github.com/osbuild/images/issues/352 is resolved

[github-actions[bot]]

This PR is stale because it has been open 30 days with no activity. Remove "Stale" label or comment or this will be closed in 7 days.

[github-actions[bot]]

This PR is stale because it has been open 30 days with no activity. Remove "Stale" label or comment or this will be closed in 7 days.

[github-actions[bot]]

This PR was closed because it has been stalled for 30+7 days with no activity.