Update Gitlab

Update the gitlab addon tag to the latest Gitlab package release tag

• network policy to allow sso egress
• turn off ingress in subcharts by default

changed milestone to %1.10.0

added gitlab label

changed the description

mentioned in merge request !531 (merged)

created merge request !531 (merged) to address this issue

added statusreview label

closed with merge request !531 (merged)

mentioned in commit 551dade5

removed statusreview label