Move prerequistes to release notes as for other products

Mark Craig

29.56.2012 abe816c6b5eb69c23b0b786c5b562b6171760a2e

opendj3/src/main/docbkx/release-notes/chap-testing.xml does not exist in tree 8736b4327e50272a5ea7d145656f875f0da4943f