This is a huge commit, it does following things: (#1942)

1. Remove ks-iam standalone binary, move it to ks-apiserver
2. Generate all devops apis inside kubesphere repository, no need to
import s2ioperator.
3. Reorganize ldap code, make it more flexible to use.

vendor/sigs.k8s.io/controller-runtime/OWNERS

@@ -1,11 +0,0 @@
-# See the OWNERS docs: https://git.k8s.io/community/contributors/devel/owners.md
-owners:
-  - directxman12
-  - droot
-  - pwittrock
-approvers:
-  - controller-runtime-admins
-  - controller-runtime-maintainers
-reviewers:
-  - controller-runtime-admins
-  - controller-runtime-maintainers