ceph-fuse: install via install.py

Signed-off-by: Sage Weil <sage@inktank.com>
install: install libcephfs-java

Signed-off-by: Sage Weil <sage@inktank.com>
testing: specify ceph.conf path in core-site.xml

Signed-off-by: Joe Buck <jbbuck@gmail.com>
testing: fix logic in determining Hadoop master

Signed-off-by: Joe Buck <jbbuck@gmail.com>