Update to include 1Password minimum os version
Update to include 1Password minimum os version

Currently the install item lists the correct minimum macOS version, but this is not reflected in the larger `minimum_os_version` for an imported munki item since it's a PKG.  Adds PlistReader and an additional MunkiPkginfoMerger to acquire this additional info.
autopkg/hjuutilainen-recipes,autopkg/hjuutilainen-recipes