- fixing plugin classpaths
 - fixing outdated process file
BZ-957116 - Classes from kie-api.jar are marked as discouraged
BZ-957110 - Drools plugin generates wrong sample project
 - fixing debug views for v6
BZ-1001928 - Drools runtime created by plugin misses java compiler
[DROOLS-235] use the new KIE api to build 6.x kprojects
(cherry picked from commit 422f51d8d0453a40ff61e24fdca650ffdca35803)