Added Create and Delete CLI Commands

Added Create and Delete CLI Commands

Handled the POST and DELETE Request for
API's for Application Package Managment and
Application Life Cycle Management

Removed training whitespaces from files.
Ran go fmt tool on all the go files as per
recommendation by official GoLang Guidelines
for formating Go files.

Signed-off-by: abhijit_onap <abhijit.das.gupta@huawei.com>
Change-Id: I648b390cff4af806508b1a08bb1517bd83474ecb
Signed-off-by: abhijit_onap <abhijit.das.gupta@huawei.com>