Update the latest version of ansible script

This patch is proposed for merging the latest version of
ansible code according to opensds-installer project.
From the latest version code, we change the default
installation way from source code to release, which means
there is no need for golang environment prepare and
long-time building work.

Change-Id: I93d7d24f29e61979bc8fda7125ae753063eda423
Signed-off-by: leonwang <wanghui71@huawei.com>