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

Change-Id: I5e9d65a482de0af260d5a1cd64ae68f62dc7bd3f

README.rst

@@ -35,11 +35,11 @@ NOTE (e0ne): current version is tested only on Linux hosts
 For any other information, refer to the parent projects, Cinder and
 python-cinderclient::
 
-*  https://git.openstack.org/cgit/openstack/cinder
-*  https://git.openstack.org/cgit/openstack/python-cinderclient
+*  https://opendev.org/openstack/cinder
+*  https://opendev.org/openstack/python-cinderclient
 
 * License: Apache License, Version 2.0
 * Documentation: https://docs.openstack.org/python-brick-cinderclient-ext/latest/
-* Source: https://git.openstack.org/cgit/openstack/python-brick-cinderclient-ext
+* Source: https://opendev.org/openstack/python-brick-cinderclient-ext
 * Bugs: https://bugs.launchpad.net/python-cinderclient
 * Release notes: https://docs.openstack.org/releasenotes/python-brick-cinderclient-ext

tox.ini

@@ -14,7 +14,7 @@ setenv = VIRTUAL_ENV={envdir}
 passenv = *_proxy *_PROXY
 
 deps =
-    -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
+    -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}
     -r{toxinidir}/test-requirements.txt
     -r{toxinidir}/requirements.txt
 commands =
@@ -54,7 +54,7 @@ commands =
 [testenv:docs]
 basepython = python3
 deps =
-       -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
+       -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -b html doc/source doc/build/html
@@ -62,7 +62,7 @@ commands = sphinx-build -b html doc/source doc/build/html
 [testenv:releasenotes]
 basepython = python3
 deps =
-       -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
+       -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html