Jm/allow custom livechecks

• Adds option of custom liveness and/or readiness checks to Jira sts via .Values.jira.livenessProbe.custom, object is templated straight into the sts resource as is (i.e no user error checks).
• No changes to chart defaults.
• bumped chart version to 1.10.0-bb.1
• removed member from code owners file as they've rolled off.

Tested using helm template with various values, templates as expected. Deployed chart from work branch to pbops preprod env.

Also - didn't update the changelog as it indicates that's done by some automation, but let me know if I need to.