F #3295: Add commit messages guidelines
F #3295: Add commit messages guidelines

Hopefully this commit message abides by the rules.

baby-gnu/one,baby-gnu/one,atodorov-storpool/one,OpenNebula/one,OpenNebula/one,OpenNebula/one,OpenNebula/one,baby-gnu/one,OpenNebula/one,atodorov-storpool/one,atodorov-storpool/one,baby-gnu/one,OpenNebula/one,atodorov-storpool/one,atodorov-storpool/one,baby-gnu/one,atodorov-storpool/one,OpenNebula/one,baby-gnu/one,atodorov-storpool/one,atodorov-storpool/one,atodorov-storpool/one,baby-gnu/one,OpenNebula/one,baby-gnu/one,OpenNebula/one