Example of passing hash from Hiera to a profile and then to create_resources

jenkins.vagrant.vm.yaml

---
classes:
  - site::profile::jenkins::master

site::profile::jenkins::master::plugins:
  git:
    version: 2.2.7
  ansicolor:
    version: 0.4.0
  build-failure-analyzer:
    version: 1.10.3
  build-monitor-plugin:
    version: 1.6+build.132
  buildgraph-view:
    version: 1.1.1
  greenballs:
    version: 1.14

master.pp

class site::profile::jenkins::master(
  $plugins = {},
) inherits ::site::params {
  require ::site::profile::jenkins

  validate_hash($plugins)

  class { '::jenkins': 
    configure_firewall => true,
    job_hash => $jobs,
  }

  include ::git

  $jenkins_plugins_defaults = {}
  create_resources('jenkins::plugin', $plugins, $jenkins_plugins_defaults)
}