add template option to proxmox and proxmox_kvm (#7143)
* add template option to proxmox and proxmox_kvm
* make recommended updates
* fix tests
* resolve comments on PR
* save changes to changelog fragment
* Update changelogs/fragments/7143-proxmox-template.yml
Co-authored-by: Felix Fontein <felix@fontein.de>
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Co-authored-by: Eric Trombly <etrombly@iomaxis.com>
Co-authored-by: Felix Fontein <felix@fontein.de>
(cherry picked from commit 07a47c047b)
Co-authored-by: Eric Trombly <etrombly@yahoo.com>