Add dsvm-functional-gate tox environment

In the neutron gate we want to run functional tests in 2 steps:
* all tests except MySQL and PostgreSQL tests,
* MySQL and PostgreSQL tests runs serially

And that was done like that in the dsvm-functional tox environment.
But there is no really point to run it as such always when someone
e.g. runs some tests from the functional tests suite locally, using
dsvm-functional environment.
So this patch adds dsvm-functional-gate environment which will be used
in the Zuul jobs and will have this 2 steps configuration.
Regular dsvm-functional env will run all tests together.

Change-Id: Ic66d9961393d9dff64ebd14802ad38c18808b1da

1 files changed, 7 insertions, 0 deletions

diff --git a/tox.ini b/tox.ini
index d7f5731695..50e855b401 100644
--- a/tox.ini
+++ b/tox.ini
@@ -64,6 +64,13 @@ deps =
   {[testenv:functional]deps}
 commands =
   {toxinidir}/tools/deploy_rootwrap.sh {toxinidir} {envdir}/etc {envdir}/bin
+  stestr run {posargs}
+
+[testenv:dsvm-functional-gate]
+setenv = {[testenv:dsvm-functional]setenv}
+deps = {[testenv:dsvm-functional]deps}
+commands =
+  {toxinidir}/tools/deploy_rootwrap.sh {toxinidir} {envdir}/etc {envdir}/bin
   stestr run --exclude-regex (.*MySQL\.|.*PostgreSQL\.) {posargs}
   stestr run --combine --concurrency 1 (.*MySQL\.|.*PostgreSQL\.) {posargs}