Minor fixes and documentation updates
#516 Provide more flexibility to provide labels to pods when subcharting pega-helm-charts
#513 Update CODEOWNERS
#511 Remove duplicate DB_TYPE entry.
#510 BUG-718978 - Added single helm chart requirement
#509 Use pegasystems/k8s-wait-for image for job ordering
#508 US-516218 : Constellation UI helm chart updates.
#507 Always set JDBC timeout environment variables so that older docker images