BZ-1060747: adapted WAS8 profile of kie-drools-wb

Conflicts:
	kie-drools-wb/kie-drools-wb-distribution-wars/src/main/was8/login.jsp
BZ-1060747: added KieCDIExtension to the WAS8 profile as it's not read from drools-compiler jar
BZ-1060747: removing conflicting jars from WAS assembly and shade sisu-inject-bean to remove javax.inject classes
BZ-1060747: missing extensions for was8 + removing unncessary was8 files

Conflicts:
	kie-wb/kie-wb-distribution-wars/src/main/was8/login.jsp