Further optimizations for Jenkins

[Cervator]

In the past with the Cloudbees flavored Jenkins one step was making an SSD storage class for faster masters - which we may well need again, especially for archiving of analytics which happens on the master and involves lots of little files.

There are other low hanging fruits at this point like simply disabling analytics we do not need (like PMD) - it isn't like we're using much of the analytics at all anyway. They can always be re-enabled later.

Initial resource config was applied but could probably need more tweaking over time.

See the TECHNICAL.md file for more details

[Cervator]

Ended up getting the SSD working before going live anyway, since that can be a pain to change after you start using your persistent volume. Curious to see how well it'll do vs still needing other tweaks to get nice speedy builds again.