[FEATURE] More templates and options for template cow

[ulvida]

The v1.0.0 of the role is a first running version, whiche default is what we used to configure in an old hand managed platforn: a banner with figlet and a fortune | cowsay for random saying of the day. The role lacks event the default.j2 template mentioned in the code.

Several webpages (as this one give tips to customize a fancy and useful motd.

The banner can be enhanced, with:

• an optional use of bannerinstead of figlet
• options for figlet,
• put color with lolcat (needed only in the controller)

The cow_figlet.j2 template can be enhanced with:

• options for cowsay,
• lolcat for the cow saying (lolcat then needed in the host)

Several other templates, particularly those usefull to gather information about host operations, can be added. For instance, we could copy (and eventually parametrize and enhance) Ubuntu motd scripts in /etc/update-motd.d/. Using ansible facts, for instance, we could deploy a motd with disk info for all mounted partitions.