Update package resource to avoid duplicate declarations.

[paxri01]

No description provided.

[bodgit]

Where is the duplicate resource coming from?

[paxri01]

Error: Could not retrieve catalog from remote server: Error 500 on SERVER: Server Error: Evaluation Error: Error while evaluating a Resource Statement, Evaluation Error: Error while evaluating a Function Call, Duplicate declaration: Package[cyrus-sasl-lib] is already declared at (file: /etc/puppetlabs/code/environments/production/modules/sasl/manifests/install.pp, line: 4); cannot redeclare (file: /etc/puppetlabs/code/environments/production/modules/sasl/manifests/application.pp, line: 94) (file: /etc/puppetlabs/code/environments/production/modules/sasl/manifests/application.pp, line: 94, column: 7)

...
## Setup SASL authentication mechanism
include sasl

if ! $sasl_users.empty {
  create_resources('encore_rp::profile::sasl_users', $sasl_users)
}

sasl::application { 'smtpd':
  pwcheck_method => 'auxprop',
  auxprop_plugin => 'sasldb',
  mech_list      => ['plain', 'login'],
  sasldb_path    => '/etc/sasldb2',
}

file { '/etc/sasldb2':
  ensure => 'file',
  owner  => 'root',
  group  => 'postfix',
  mode   => '0640',
}
...