GEODE-10570: Replace 2.0.0 with 2.0.1 as old version

Replace 2.0.0 with 2.0.1 in old versions on support/2.0
to enable rolling upgrade tests from 2.0.1

The serialization version has not changed between 2.0.0 and 2.0.1,
so there should be no need to keep both

Author: JinwooHwang

settings.gradle

@@ -132,9 +132,7 @@ include 'geode-server-all'
  '1.13.8',
  '1.14.0', // Include for SSL protocol configuration changes in 1.14.0
  '1.14.4',
- '2.0.0',
- '2.0.0',
- '2.0.0'].each {
+ '2.0.1'].each {
   include 'geode-old-versions:'.concat(it)
 }