FT execution time in Zuul is about to exceed its timeout. This patch
make the existing dsvm-functional FT job to be separated to two jobs;
* dsvm-functional-legacy
* dsvm-functional-sol
This patch fixes the unstable FT results in zuul FT jobs:
* test_rollback_instantiate:
``depends_on`` in BaseHOT makes stable deletion of stacks, otherwise
Heat fails to delete subnets due to missing dependency with ports.
* test_vnf_alarm_scale_with_instance_reservation:
"--concurrency 1" enables to run test without any VMs on hosts,
otherwise Blazar fails to add hosts into the freepool.
Changes:
* Split the FT directory to legacy and sol
* Create new tox envs for FT of legacy and of SOL
* Relative path are changed due to the new directory structure
* Add ``depends_on` parameter in BaseHOT
* Set "--concurrency 1" for both of the new FT jobs
Change-Id: I4c66353eada16f7e51d7ed1c1999cf50635b9dce
ba813054a4