Force java 1.6
Force java 1.6

oleg-nenashev/lucene-search-plugin,jenkinsci/lucene-search-plugin,jenkinsci/lucene-search-plugin,oleg-nenashev/lucene-search-plugin,oleg-nenashev/lucene-search-plugin,oleg-nenashev/lucene-search-plugin,jenkinsci/lucene-search-plugin