Replace git.openstack.org URLs with opendev.org URLs

Change-Id: I4797b7c1a988e0eeee16df9ee4f0f2c43f143d36

README.rst

@@ -24,7 +24,7 @@ The installation folder of Mistral Dashboard will be referred to as <mistral-das
 The following should get you started. Clone the repository into your local
 OpenStack directory::
 
-    $ git clone https://git.openstack.org/openstack/mistral-dashboard.git
+    $ git clone https://opendev.org/openstack/mistral-dashboard.git
 
 Install mistral-dashboard
 

tox.ini

@@ -5,7 +5,7 @@ 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} {opts} {packages}
+install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt} {opts} {packages}
 setenv =
    VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/requirements.txt