Update instructions to install older versions of KMS
Update instructions to install older versions of KMS

Change-Id: I4f06fdb82fe29d61a218ec39126ef6e2b7d67949

SanMi86/doc-kurento,SanMi86/doc-kurento,Kurento/doc-kurento,SanMi86/doc-kurento,Kurento/doc-kurento,Kurento/doc-kurento,SanMi86/doc-kurento