[MacPorts] #58723: helm 2.14.1: Split helm ports into multiple versions with select

[MacPorts]

#58723: helm 2.14.1: Split helm ports into multiple versions with select
-------------------------+--------------------
 Reporter:  pedrohdz     |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.5.4
 Keywords:               |       Port:  helm
-------------------------+--------------------
 Allow for multiple versions of helm to be installed.  Each port is based
 on the minor version of the helm release.  Allow for using {{{port
 select}}} to pin a default version.

 Helm (client) and Tiller (server) can only vary by patch numbers in order
 to maintain compatibility (https://helm.sh/docs/using_helm/#upgrading):

 > The rules for version numbers are as follows:
 >
 > * Pre-release versions are incompatible with everything else. Alpha.1 is
 incompatible with Alpha.2.
 > * Patch revisions are compatible: 1.2.3 is compatible with 1.2.4
 > * Minor revisions are not compatible: 1.2.0 is not compatible with
 1.3.0, though we may relax this constraint in the future.
 > * Major revisions are not compatible: 1.0.0 is not compatible with
 2.0.0.

 This can be problematic in environments where there are several Tiller
 installations shared by my administrators.

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Ticket URL: <https://trac.macports.org/ticket/58723>
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