update git.openstack.org to opendev

Change-Id: I26f9ce0de55a719df7c1330c01f48aa36056eb1a

README.rst

@@ -20,7 +20,7 @@ Release notes for the project can be found at:
   https://docs.openstack.org/releasenotes/openstack-ansible-memcached_server/
 
 The project source code repository is located at:
-  https://git.openstack.org/cgit/openstack/openstack-ansible-memcached_server/
+  https://opendev.org/openstack/openstack-ansible-memcached_server/
 
 The project home is at:
   https://launchpad.net/openstack-ansible

doc/source/conf.py

@@ -70,7 +70,7 @@ title = 'OpenStack-Ansible Documentation: ' + role_name + 'role'
 
 # The link to the browsable source code (for the left hand menu)
 oslosphinx_cgit_link = (
-    'https://git.openstack.org/cgit/openstack/{}'.format(target_name)
+    'https://opendev.org/openstack/{}'.format(target_name)
 )
 
 # The version info for the project you're documenting, acts as replacement for

tox.ini

@@ -7,7 +7,7 @@ envlist = docs,linters,functional
 [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}
+    pip install -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master} {opts} {packages}
 commands =
     /usr/bin/find . -type f -name "*.pyc" -delete
 passenv =