Cleanup how python modules are configured

[traylenator]

Convert templates for collectd::module::python to epp

Example

collectd::plugin::python::module{'example':
  config => [{'Verbose' => true,
              'Values'  => ['abc',def'],
              'Name     => 'My Name',
              'Limit    => 3.4
             },
            ],
  }
}

This will now render as

Import "example"
<Module "example">
  Verbose true
  Values "abc" "def"
  Name "My Name"
  Limit 3.4
</Module>

Specifying a hash value in the config paramater will now result in a type
failure. Previously it would add nonsense to the configuration file.
e.g

collectd::plugin::python::module{'example':
  config => [{'Values' => {'abc' => 'def'}}],
}

will now give a type error.

To specify a list of quoted strings use an array. Previously
the following could be used.

collectd::plugin::python::module{'example':
  config => [{'Values' => '"abc" "def"',
              'Name'   => '"My Name"',
            }],
}

to acheive the same result use

collectd::plugin::python::module{'example':
  config => [{'Values' => ['abc','def'],
              'Name'   => 'My Name',
            }],
}

to render

Import "example"
<Module "example">
  Values "abc" "def"
  Name "My Name"
</Module>

It is now possible to specify multiple instances of a single python
module by using collectd::plugin::python::module twice. e.g.

collectd::plugin::python::module{'exampleA':
  module => 'example',
  config => [{'Values' => 'abc'],}
}
collectd::plugin::python::module{'exampleB':
  module => 'example',
  config => [{'Values' => 'def'],}
}

Fixes #819

[traylenator]

change should not be there.

[juniorsysadmin]

Please make the extension .epp

[traylenator]

It's weird how it even works without. .epp added to that and other two places now.

[bastelfreak]

thanks @traylenator !