Merge branch 'sc1-instrument-before-ensureconnected' into 'master'

Add Redis instrumentation before `ensure_connected`

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/137949



Merged-by: Heinrich Lee Yu <heinrich@gitlab.com>
Approved-by: Heinrich Lee Yu <heinrich@gitlab.com>
Reviewed-by: Bob Van Landuyt <bob@gitlab.com>
Reviewed-by: Heinrich Lee Yu <heinrich@gitlab.com>
Co-authored-by: Sylvester Chin <schin@gitlab.com>