HBASE-20591 nightly job needs to enable maven build system.
HBASE-20591 nightly job needs to enable maven build system.

Signed-off-by: Mike Drob <7d5db5eeae20c13a709f5640b51f5c63dc0a2d15@apache.org>

ndimiduk/hbase,francisliu/hbase,mahak/hbase,Apache9/hbase,bijugs/hbase,bijugs/hbase,ndimiduk/hbase,ndimiduk/hbase,ChinmaySKulkarni/hbase,francisliu/hbase,ChinmaySKulkarni/hbase,ultratendency/hbase,francisliu/hbase,ultratendency/hbase,bijugs/hbase,Eshcar/hbase,apurtell/hbase,ChinmaySKulkarni/hbase,francisliu/hbase,mahak/hbase,apurtell/hbase,ultratendency/hbase,apurtell/hbase,ChinmaySKulkarni/hbase,ndimiduk/hbase,ndimiduk/hbase,Apache9/hbase,francisliu/hbase,bijugs/hbase,ndimiduk/hbase,mahak/hbase,Eshcar/hbase,ultratendency/hbase,ChinmaySKulkarni/hbase,mahak/hbase,ndimiduk/hbase,ultratendency/hbase,ChinmaySKulkarni/hbase,apurtell/hbase,mahak/hbase,apurtell/hbase,bijugs/hbase,mahak/hbase,ChinmaySKulkarni/hbase,Eshcar/hbase,Eshcar/hbase,Eshcar/hbase,apurtell/hbase,ChinmaySKulkarni/hbase,Eshcar/hbase,ultratendency/hbase,francisliu/hbase,ultratendency/hbase,apurtell/hbase,bijugs/hbase,ultratendency/hbase,Apache9/hbase,Apache9/hbase,Apache9/hbase,ChinmaySKulkarni/hbase,ultratendency/hbase,bijugs/hbase,ultratendency/hbase,ndimiduk/hbase,Apache9/hbase,Eshcar/hbase,apurtell/hbase,bijugs/hbase,mahak/hbase,Apache9/hbase,ndimiduk/hbase,Apache9/hbase,Eshcar/hbase,Eshcar/hbase,bijugs/hbase,ChinmaySKulkarni/hbase,Apache9/hbase,mahak/hbase,ndimiduk/hbase,francisliu/hbase,apurtell/hbase,mahak/hbase,Apache9/hbase,Eshcar/hbase,bijugs/hbase,mahak/hbase,francisliu/hbase,francisliu/hbase,francisliu/hbase,apurtell/hbase