proxy support for apt::ppa
Adding specs for proxy and apt::ppa
Merge pull request #144 from hunner/ppa_proxy

Ppa proxy
Fix: apt::ppa options parameter to pass options to apt-add-repository command
Fix: ppa options support specs
Merge pull request #146 from botify-labs/handle_ppa_options

Fix: parametrize apt::ppa class for beign able to pass options to apt-add-repository command