Puppet Module of the Day -- http://forge.puppetlabs.com/cprice404/inifile

cprice404-inifile.pp

ini_setting { "puppet_pluginsync":
  ensure  => present,
  path    => '/etc/puppet/puppet.conf',
  section => 'main',
  setting => 'pluginsync',
  value   => 'true',
}

shell_output.sh

[root@centos6 ~]# puppet module install cprice404-inifile
Preparing to install into /etc/puppet/modules ...
Downloading from http://forge.puppetlabs.com ...
Installing -- do not interrupt ...
/etc/puppet/modules
└── cprice404-inifile (v0.0.2)

[root@centos6 ~]# puppet apply cprice404-inifile.pp 
notice: /Stage[main]//Ini_setting[puppet_pluginsync]/ensure: created
notice: Finished catalog run in 0.27 seconds

[root@centos6 ~]# cat /etc/puppet/puppet.conf 
[main]
    # The Puppet log directory.
    # The default value is '$vardir/log'.
    logdir = /var/log/puppet

    # Where Puppet PID files are kept.
    # The default value is '$vardir/run'.
    rundir = /var/run/puppet

    # Where SSL certificates are kept.
    # The default value is '$confdir/ssl'.
    ssldir = $vardir/ssl

pluginsync = true
[agent]
    # The file in which puppetd stores a list of the classes
    # associated with the retrieved configuratiion.  Can be loaded in
    # the separate ``puppet`` executable using the ``--loadclasses``
    # option.
    # The default value is '$confdir/classes.txt'.
    classfile = $vardir/classes.txt

    # Where puppetd caches the local configuration.  An
    # extension indicating the cache format is added automatically.
    # The default value is '$confdir/localconfig'.
    localconfig = $vardir/localconfig

[root@centos6 ~]# puppet apply cprice404-inifile.pp 
notice: Finished catalog run in 0.25 seconds