Moved some sections around in upgrade docs to fit more logically together CTR
Moved some sections around in upgrade docs to fit more logically together CTR

apache/tinkerpop,apache/tinkerpop,apache/tinkerpop,apache/tinkerpop,apache/tinkerpop,apache/incubator-tinkerpop,apache/incubator-tinkerpop,apache/tinkerpop,apache/incubator-tinkerpop,apache/tinkerpop