Problems with listing and deleting jails and plugins

Issue arised when trying to figure out why showing jails or plugins in the webgui is _TERRIBLY_ slow, it takes 3-5 minutes to list them, then when you try to edit it is 3-5 more minutes of waiting before editing is possible.

Tried cleaning up some test and old jails, and was not able to destroy jails

just get the following :

mirai% sudo iocage destroy Octoprint2

This will destroy jail Octoprint2

Are you sure? [y/N]: y
Destroying Octoprint2
Traceback (most recent call last):
  File "/usr/local/bin/iocage", line 10, in <module>
    sys.exit(cli())
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/iocage_cli/destroy.py", line 131, in cli
    iocage.destroy_jail(force=force)
  File "/usr/local/lib/python3.8/site-packages/iocage_lib/iocage.py", line 750, in destroy_jail
    ioc_destroy.IOCDestroy().destroy_jail(path)
  File "/usr/local/lib/python3.8/site-packages/iocage_lib/ioc_destroy.py", line 46, in __init__
    self.iocroot_datasets = [
  File "/usr/local/lib/python3.8/site-packages/iocage_lib/ioc_destroy.py", line 46, in <listcomp>
    self.iocroot_datasets = [
  File "/usr/local/lib/python3.8/site-packages/iocage_lib/dataset.py", line 84, in get_dependents
    if ds.locked:
  File "/usr/local/lib/python3.8/site-packages/iocage_lib/dataset.py", line 90, in locked
    return not self.mounted or (
  File "/usr/local/lib/python3.8/site-packages/iocage_lib/dataset.py", line 79, in mounted
    return self.properties['mounted'] == 'yes'
KeyError: 'mounted'
mirai%

Same error from the webui, just less detailed.

Did a delete on the dataset of another jail, it then vanished fine from the webui and iocage list, however _ALL_ other jails became _DOWN_ and had to be started

Generated a debug log for this issue, then FreeNAS crashed hard upon creating it