Signed-off-by: Nhongming <talonwan@yunify.com>

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.

use istio client-go library instead of knative
bump kubernetes dependency version
change code coverage to codecov

Signed-off-by: NXin Wang <wileywang@yunify.com>

1. refactor kubesphere dependency service client creation, we can
disable dependency by config
2. dependencies can be configured by configuration file
3. refactor cmd package using cobra.Command, so we can use hypersphere
to invoke command sepearately. Later we only need to build one image to
contains all kubesphere core components. One command to rule them all!
4. live reloading configuration currently not implemented

Signed-off-by: Nrunzexia <runzexia@yunify.com>

Signed-off-by: Nhongming <talonwan@yunify.com>

Signed-off-by: Nhongming <talonwan@yunify.com>

refactor virtualservice controller

change kiali mux to go-restful

add knative

add health api

change kiali mux to go-restful

add knative