CI: set properities with YAML, because spheshyul Chars "suck"

Yup. <3 Helm "set" parser.

Effectively Helm's "smart" parser for --set actually does splitting on special characters, and just plain gets weird. In order to avoid this, we get around this my creating a YAML file with the ci.x properties we deploy. Previously, CI_COMMIT_TITLES like this one (MR title is the commit title) would break in lovely & odd ways when :, ", ', ,, et al were in play. Let's take them out of the equation, shall we?

(These ci.x properties are to help the project maintainers)