* tests: Allow to use custom keys in `BlockTools.new_plot`
* tests: Create three plots with `G1Element()` as farmer/pool key
But not add them as default plots. Just to have plots in the test cache with different keys from
within and outside the keychain for plot loading tests.
create
* test|github: Bump `test-cache` version to `0.28.0`
* plotting: Drop plots from `no_key_filenames` after the keys appeared
* plotting: Drop plots from `no_key_filenames` if the plot was removed
* tests: Test loading of plots where we miss the keys
* plotting: Use `x.copy()` instead of `list(x)`
* plotting: Add a comment about the missing keys plot removal
* tests: Fix after #9595
dustinfaceandGitHub