Pin tox to queens

Change-Id: I000f1d2debe03c25894c3f36c0f81189ac968c9d

requirements.txt

@@ -5,7 +5,6 @@ pbr!=2.1.0,>=2.0.0 # Apache-2.0
 
 alembic>=0.8.10 # MIT
 neutron-lib>=1.13.0 # Apache-2.0
-neutron>=12.0.0 # Apache-2.0
 oslo.i18n>=3.15.3 # Apache-2.0
 oslo.config>=5.1.0 # Apache-2.0
 oslo.log>=3.36.0 # Apache-2.0

tox.ini

@@ -5,10 +5,11 @@ skipsdist = True
 
 [testenv]
 usedevelop = True
-install_command = pip install -c {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} -r requirements.txt -U {opts} {packages}
+install_command = pip install -c {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt?h=stable%2Fqueens} -r requirements.txt -U {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
          PYTHONWARNINGS=default::DeprecationWarning
 deps = -r{toxinidir}/test-requirements.txt
+       -egit+https://git.openstack.org/openstack/neutron.git@stable/queens#egg=neutron
 whitelist_externals = sh
 commands = python setup.py testr --slowest --testr-args='{posargs}'