Jordan Ogas 1666db60d0 charliecloud: add 0.18 (#18200) ...

* add 0.18, remove older versions

* update url

* fix typo

2020-08-20 20:16:34 -05:00

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spack

charliecloud: add 0.18 (#18200)

2020-08-20 20:16:34 -05:00