* `package_name`: Names the package that provides the `apt-add-repository` command. Valid options: a string. Defaults:
* Lucid and Precise: 'python-software-properties'
- * Trusty, Utopic, and Vivid: 'software-properties-common'
- * All others: undef
+ * Trusty and newer: 'software-properties-common'
+ * All others: 'python-software-properties'
* `release`: *Optional if lsb-release is installed (unless you're using a different release than indicated by lsb-release, e.g., Linux Mint).* Specifies the operating system of your node. Valid options: a string containing a valid LSB distribution codename. Default: "$lsbdistcodename".