BIGTOP-2893 Bump Hadoop to 2.8.1

[acmnu]

Patches:

HADOOP-12366 was ported to 2.8.1 HADOOP-11628 was removed because it was merged to 2.8

Build time issues fixed:

Fuse_dfs target dir has been changed in 2.8

cp: cannot stat 'hadoop-hdfs-project/hadoop-hdfs/target/native/main/native/fuse-dfs/fuse_dfs': No such file or directory

add package goal to mvn

Without that goal tar is incomplete:

for dir in '${HADOOP_DIR}/{lib,}' '${HDFS_DIR}/{lib,}' '${YARN_DIR}/{lib,}' '${MAPREDUCE_DIR}/{lib,}' '[' -e /code/build/hadoop/rpm/BUILDROOT/hadoop-2.8.1-243.el7.centos.x86_64/usr/lib/hadoop-mapreduce//hadoop-common-2.8.1.jar ']' exit 1 error: Bad exit status from /var/tmp/rpm-tmp.5Etrah (%install) Bad exit status from /var/tmp/rpm-tmp.5Etrah (%install)