Fix module name to make the PMT happier

[branan]

The incorrect module name causes problems with puppet module list. It will report that ripienaar-concat is missing even though it is installed, since the module reports itself as puppet-concat.

$ sudo puppet module list
Warning: Missing dependency 'ripienaar-concat':
  'puppetlabs-glance' (v0.1.0) requires 'ripienaar-concat' (>= 0.1.0)
  'puppetlabs-keystone' (v0.1.0) requires 'ripienaar-concat' (>= 0.1.0)
/etc/puppet/modules
├── duritong-sysctl (v0.0.1)
├── puppet-concat (v0.1.0)
├── puppetlabs-apt (v0.0.4)
├── puppetlabs-glance (v0.1.0)
├── puppetlabs-horizon (v0.1.0)
├── puppetlabs-keystone (v0.1.0)
├── puppetlabs-mysql (v0.3.0)
├── puppetlabs-nova (v0.1.1)
├── puppetlabs-openstack (v0.1.0)
├── puppetlabs-rabbitmq (v2.0.1)
├── puppetlabs-stdlib (v2.3.3)
└── saz-memcached (v2.0.2)