Upgrade to release 21.2.1:
- fix: update minimum dependencies (here, and in other crossbar
packages) in an attempt to tame the new pip dep resolver madness
Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>
Acked-by: Trevor Gamblin <trevor.gamblin@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
