Update freemarker version to 2.3.20

Signed-off-by: Khushbu Shrivastava <khushbu.shrivastava@intel.com>
Update freemarker version to 2.3.20 (take 2)

Signed-off-by: Khushbu Shrivastava <khushbu.shrivastava@intel.com>
Merge pull request #209 from Khushbu27/0.4.0.1

Freemarker version update freemarker-2.3.20