allow using both infrastructure_roles_options (#1090)

* allow using both infrastructure_roles_options

* new default values for user and role definition

* use robot_zmon as parent role

* add operator log to debug

* right name for old secret

* only extract if rolesDefs is empty

* set password1 in old infrastructure role

* fix new infra rile secret

* choose different role key for new secret

* set memberof everywhere

* reenable all tests

* reflect feedback

* remove condition for rolesDefs

pkg/util/config/config.go

@@ -61,6 +61,9 @@ type InfrastructureRole struct {
 	PasswordKey string
 	RoleKey     string
 
+	DefaultUserValue string
+	DefaultRoleValue string
+
 	// This field point out the detailed yaml definition of the role, if exists
 	Details string