Feature #1554: New method ObjectXML::add_node
Feature #1554: Scheduler adds a new element, CLUSTER_TEMPLATE, to each Host after the pool is refreshed
Feature #1554: Make requirements and rank expressions able to search in /HOST/CLUSTER_TEMPLATE
feature #1554: Generate Lex&Yacc files
Merge branch 'feature-1554'
Merge branch 'master' of git.opennebula.org:one
Merge branch 'master' of git.opennebula.org:one