Update Mattermost: IB Init Container, No Ingress

Package Owner Merge Request

Package Changes

https://repo1.dso.mil/platform-one/big-bang/apps/collaboration-tools/mattermost/-/tags/0.2.4-bb.0

https://repo1.dso.mil/platform-one/big-bang/apps/collaboration-tools/mattermost/-/merge_requests/71

Closes https://repo1.dso.mil/platform-one/big-bang/apps/collaboration-tools/mattermost/-/issues/35

Closes https://repo1.dso.mil/platform-one/big-bang/apps/collaboration-tools/mattermost/-/issues/34

changed milestone to %1.21.0

added mattermost mattermostoperator minioOperator labels

assigned to @micah.nagel

requested review from @ryan.j.garcia and @BrandenCobb

marked this merge request as ready

added statusreview label

approved this merge request

merged

mentioned in commit 967902a9

mentioned in issue #638 (closed)