Update tox.ini settings for pike

Change-Id: I9037c9d871d7429413c1a31a82620b20980f944e

tox.ini

@@ -6,13 +6,13 @@ skipsdist = True
 [testenv]
 usedevelop = True
 install_command =
-    {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
+    {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt?h=stable/pike} {opts} {packages}
 setenv =
    VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-       -egit+https://github.com/openstack/nova#egg=nova
-       -rhttps://raw.githubusercontent.com/openstack/nova/master/test-requirements.txt
+       -egit+https://github.com/openstack/nova@stable/pike#egg=nova
+       -rhttps://raw.githubusercontent.com/openstack/nova/stable/pike/test-requirements.txt
 whitelist_externals = bash
 commands = bash tools/pretty_tox.sh '{posargs}'