[MacPorts] #49883: percona-toolkit: remove broken perl variants, add +perl5_22 as default

[MacPorts]

#49883: percona-toolkit: remove broken perl variants, add +perl5_22 as default
----------------------+-----------------------------
 Reporter:  devans@…  |      Owner:  pixilla@…
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:            |       Port:  percona-toolkit
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 Variants +perl5_8 +perl5_10 +perl5_12 +perl5_14 are no longer viable as
 the required dependents have been removed. They should be removed as well.
 To add support for the current stable perl version, a +perl5_22 variant
 could be added as the default variant.

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Ticket URL: <https://trac.macports.org/ticket/49883>
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