Fix for changed PHP PPA repository

[Repox]

This pull request addresses issue #568 and #569

[Repox]

If someone wants to start using the fix, change the Vagrantfile's Github config settings to the following:

# Config Github Settings
github_username = "Repox"
github_repo     = "Vaprobash"
github_branch   = "feature/phpppa"
github_url      = "https://raw.githubusercontent.com/#{github_username}/#{github_repo}/#{github_branch}"

Currently, the available PHP versions are:

• 5.5
• 5.6
• 7.0
• 7.1

[bendubuisson]

Any chance of merging this PR please? been using Repox's fix in the mean time but it would be good to go back to "normal". @fideloper

Thanks!

[Repox]

I know you're busy, @fideloper , but it would be nice with some feedback on this.

It's hard to recommend Vaprobash in it's current state.

[edwinveldhuizen]

@fideloper please merge this pull request 😊

[fideloper]

Does look good, let's try it out.

In theory this entire thing should go to Ubuntu 16.04 version of this, but I don't have time to put the work into that unfortunately.

[Repox]

Thank you.

I'll take a look at bumping it to 16.04.

[bendubuisson]

5.5 is still broken (5.6 works)

vagrant@php55:~$ sudo apt-get install php5.5-cli
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package php5.5-cli
E: Couldn't find any package by regex 'php5.5-cli'

[bendubuisson]

from https://launchpad.net/~ondrej/+archive/ubuntu/php:

PLEASE DON'T USE PHP 5.4 OR PHP 5.5. The PHP 5.5 and later are no longer supported with security updates, therefore they are not included in this repository.

[Repox]

At the time when I created the pull request, 5.5 worked, but I do see that this isn't the case anymore.

I'll have to update the documentation accordingly.