Tag dovetail with cvp.0.5.0

Tag dovetail with cvp.0.5.0

JIRA: DOVETAIL-483

1. docker image used
   yardstick: danube.3.2
   functest: cvp.0.5.0
   bottlenecks: cvp.0.4.0
   testapi: cvp.0.5.0
   dovetail: cvp.0.5.0
2. main changes
   Bugfix: wrong command in function 'check_https_enabled'
   Use opnfv/functest:cvp.0.5.0 and do some adaptions in dovetail tool
   Create a tar file for all logs
   Add tempest test cases into proposed_tests
   Fix testapi base_url for public_url
   Add user guide for results operations on web
3. For more information, refer to
   https://wiki.opnfv.org/display/dovetail/Running+history+for+the+dovetail+tool

Change-Id: Iec548b077a704ff68d6b93de3436e109d59371cd
Signed-off-by: xudan <xudan16@huawei.com>