Raise minimum version to 10.0

Fuel Mitaka release is not compatible with changes recently made,
so its support is now dropped.

Change-Id: I259e0bac78068c63bec19b93e6b4427e34c28c98
Related-Bug: #1583747

metadata.yaml

@@ -2,7 +2,7 @@ name: detach-keystone
 title: Separate Keystone from controller
 version: '1.0.2'
 description: Creates separate Keystone role for deploying
-fuel_version: ['9.0']
+fuel_version: ['10.0']
 licenses: ['Apache License Version 2.0']
 authors: ['Bartlomiej Piotrowski', 'Mirantis']
 homepage: 'https://github.com/barthalion/detach-keystone'
@@ -10,11 +10,6 @@ groups: [network]
 is_hotpluggable: false
 
 releases:
-  - os: ubuntu
-    version: mitaka-9.0
-    mode: ['ha']
-    deployment_scripts_path: deployment_scripts/
-    repository_path: repositories/ubuntu
   - os: ubuntu
     version: newton-10.0
     mode: ['ha']