* Add disable flags for control components (#2900)

* Add disable flags to control components
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* golint
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* more fixes
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* fixes to disable flags
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* Add comments to functions
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* Fix joining problem
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* more fixes
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* golint
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* fix ticker
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* fix role labels
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* more fixes
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* update dynamiclistener
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* remove etcd member if disable etcd is passed
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* Mark disable components flags as experimental
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* change error to warn when removing self from etcd members
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* Add hidden to disable flags
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>

* go mod
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>