Add TTF font on QA slaves

Install true type fonts on QA slaves

As reference you might find helpful the following readme:
https://github.com/nuxeo/fox-dam/blob/master/README.md

for the fonts you might use:

apt-get update;
sudo apt-get install ttf-mscorefonts-installer -y;
sudo fc-cache -f -v;

We expect to see Ariel fonts at /usr/share/fonts/truetype/ariel.ttf