init commit: import from github/ceph/hadoop-common

Import from github.com/ceph/hadoop-common cephfs/branch-1.0.

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
build: add maven build spec

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
update pom.xml

Signed-off-by: chenh <hchen@redhat.com>
fix wrong df output

Signed-off-by: chenh <hchen@redhat.com>
update cephfs version

Signed-off-by: chenh <hchen@redhat.com>
doc: add license

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
doc: add README

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>