Update (git|review).openstack.org links to opendev

This updates links going to git.openstack.org and review.openstack.org
to go to their respective opendev locations to avoid redirects.

Change-Id: I78e3bb5303718962f591117f9c0ee11f2314b128
Closes-Bug: #1833256
diff --git a/doc/source/guides/neutron.rst b/doc/source/guides/neutron.rst
index 80b2f85..2c25a1c 100644
--- a/doc/source/guides/neutron.rst
+++ b/doc/source/guides/neutron.rst
@@ -567,7 +567,7 @@
     Q_ML2_PLUGIN_MECHANISM_DRIVERS=macvtap
     Q_USE_PROVIDER_NETWORKING=True
 
-    enable_plugin neutron https://git.openstack.org/openstack/neutron
+    enable_plugin neutron https://opendev.org/openstack/neutron
 
     ## MacVTap agent options
     Q_AGENT=macvtap
@@ -622,7 +622,7 @@
 
     # Services that a compute node runs
     disable_all_services
-    enable_plugin neutron https://git.openstack.org/openstack/neutron
+    enable_plugin neutron https://opendev.org/openstack/neutron
     ENABLED_SERVICES+=n-cpu,q-agt
 
     ## MacVTap agent options