LU-7468 tests: update maloo_upload.sh to create upload.tar.gz

LU-7468 tests: update maloo_upload.sh to create upload.tar.gz

Uploaded files are now expected to have the '.tar.gz' extension.
This patch updates maloo_upload.sh to create upload.tar.gz before
uploading.

Signed-off-by: Leonel Ochoa <leonel.ochoa@intel.com>
Change-Id: Id8b6dd08dde873fad9e85438360e451945903e9c
Reviewed-on: http://review.whamcloud.com/17344
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: James Nunez <james.a.nunez@intel.com>
Reviewed-by: Minh Diep <minh.diep@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>