Add Drupal to Alpaca Travis Setup

[dannylamb]

We need Drupal installed in the Alpaca test environment before we can do end-to-end integration testing. Add the relevant parts of the travis setup for the islandora modules to Alpaca.

[ruebot]

@dannylamb questions about the priority and need of this as I am working through Islandora/Alpaca#23:

• What's the priority on this?
• Is this 100%, or can we achieve the end-to-end testing another way

Asking because of the constraints of TravisCI. We are bound to an Ubuntu 12.04 machine, and that machine is either a "Java" or "PHP" machine. So, if it is a Java machine, which we are using now, we need to setup a full PHP 7 environment on it, along with MySQL and PEAR to get everything going. Or, we go the other way, and get Java environment setup on a PHP machine. So, before I go any further on this, let me know what you think.

Current status of the build with attempting a full Drupal setup can be found here: https://travis-ci.org/Islandora-CLAW/Alpaca/jobs/185176564#L171

[dannylamb]

For posterity, there was an IRC conversation about this, and we decided to move forward with putting Java onto a PHP box, since LAMP is trickier to install via travis than just Java.

And priority is fairly high, since we should be providing tests with each PR instead of slapping things together and hoping a brave soul will try to write tests for all of it after the fact.

[ruebot]

http://irclogs.islandora.ca/2016-12-19.html

[dannylamb]

@ruebot Why are we bound to 12.04? I don't like the thought of being two LTS's behind if it can be avoided.

[ruebot]

https://docs.travis-ci.com/user/ci-environment/ -- Honestly not sure how to force it to use 14.04, which is supposedly available.

[dannylamb]

hunh, apparantly like this:

dist: trusty
sudo: required

totally out of scope for this, but good to know.

[ruebot]

Hah! That totally makes sense! I'm happy to toss another commit on here if you'd like just to see if it works, and if it does, we can create a ticket to update other builds. Seems like that would be a good newbie ticket too.

[ruebot]

@dannylamb added trusty in the latest code review commit.

[dannylamb]

you didn't have to. but as long as there's no explosions, i don't mind ;)