Merge pull request goharbor#9127 from stuclem/fix-conflicts

Attempting to resolve conflicts in 1.9 branch

Merge pull request goharbor#9111 from danfengliu/release-1.8.0

[cherry-pick to release-1.8.0] Replace nightly test case sample image from haproxy to postgres

Merge pull request goharbor#9097 from wy65701436/release-1.8.0

Promote version to v1.8.3

Merge pull request goharbor#9064 from wy65701436/release-1.7.0

Promote version to v1.7.6

Merge pull request goharbor#9064 from wy65701436/release-1.7.0

Promote version to v1.7.6

Merge pull request goharbor#9051 from ywk253100/190911_health_cherrypick

[Cherry-pick]Add the port 8080 to the default URL of portal to avoid the health check API failure

Merge pull request goharbor#8939 from wy65701436/release-1.9.0

Enable migrator in offline installer

Merge pull request goharbor#8560 from stonezdj/merge_user_group_roles…

…_v182

Merge user roles and group roles -- 1.8 cherry pick

Merge pull request goharbor#8560 from stonezdj/merge_user_group_roles…

…_v182

Merge user roles and group roles -- 1.8 cherry pick

Merge pull request goharbor#8342 from wy65701436/release-1.8.0

[cherry-pick]  Enable push dev images on release branch