Description of problem:
After installation, scheduler does not use schedulerConfigfile and create from the defaultprovider, and we have to use the following lines to make the schedulerConfigFile back to work on kubenetes 1.9:
kubernetesMasterConfig:
......
  schedulerArguments:
    use-legacy-policy-config:
    - "true"
  schedulerConfigFile: /etc/origin/master/scheduler.json




Version-Release number of the following components:
openshift-ansible-3.9.0-0.34.0.git.0.c7d9585.el7.noarch.rpm 
ansible-2.4.2.0-2.el7.noarch.rpm
# openshift version 
openshift v3.9.0-0.34.0
kubernetes v1.9.1+a0ce1bc657
etcd 3.2.8

How reproducible:

Steps to Reproduce:
1. After installation checked logs for service atomic-openshift-master-controllers
2.
3.

Actual results:
scheduler start with defaultprovider

Expected results:
scheduler should start from the given config file

Additional info:
for 3.8, schedulerConfigFile still work.