Description of problem:
Only one annotation returns when both expose and base64-expose annotations are defined in template per bind request:
"credentials": {
   "password": "GLyB07avWLNwUcai",
   "root-password": "1sXaso000YgOFSGl",
   "uri": "mysql://172.30.172.5:3306",
   "username": "username"
  }

Version-Release number of selected component (if applicable):
openshift v3.6.121
kubernetes v1.6.1+5115d708d7
etcd 3.2.0

How reproducible:
always

Steps to Reproduce:
1.Create a template under test project like below:
"objects": [
    {
      "kind": "Secret",
      "apiVersion": "v1",
      "metadata": {
        "name": "${DATABASE_SERVICE_NAME}",
        "annotations": {
          "template.openshift.io/expose-username": "{.data['database-user']}",
          "template.openshift.io/expose-password": "{.data['database-password']}",
          "template.openshift.io/expose-root-password": "{.data['database-root-password']}",
          "template.openshift.io/base64-expose-username": "{.data['database-user']}",
          "template.openshift.io/base64-expose-password": "{.data['database-password']}",
          "template.openshift.io/base64-expose-root-password": "{.data['database-root-password']}"
        }
      },
      "stringData" : {
        "database-user" : "${MYSQL_USER}",
        "database-password" : "${MYSQL_PASSWORD}",
        "database-root-password" : "${MYSQL_ROOT_PASSWORD}"
      }
2. Enable service broker to project test
3. Change namespace and cluster address in shared.shh
4. Change namespace to test in provision.sh and bind.ssh and execute these two scripts


Actual results:
Only one group of data returns per bind request

Expected results:
It should have a warning about which kind of data will return when two kinds of annotations are defined during bind request.

Additional info: