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

1. Replace git.openstack.org URLs with opendev.org URLs
2. Remove unncessary "=="
3. Update some URLs to latest

Change-Id: I57998a8923473eb4e139b5fb29f340951478e685

README.rst

@@ -1,6 +1,6 @@
-===============================
+=====================
 python-masakariclient
-===============================
+=====================
 
 masakariclient module and a CLI tool for masakari
 
@@ -10,8 +10,8 @@ Note that this is a hard requirement.
 
 * Free software: Apache license
 * Documentation: http://docs.openstack.org/developer/python-masakariclient
-* Source: http://git.openstack.org/cgit/openstack/python-masakariclient
-* Bugs: http://bugs.launchpad.net/python-masakariclient
+* Source: https://opendev.org/openstack/python-masakariclient
+* Bugs: https://bugs.launchpad.net/python-masakariclient
 
 Features
 --------

doc/source/index.rst

@@ -4,7 +4,7 @@
    contain the root `toctree` directive.
 
 Welcome to python-masakariclient's documentation!
-========================================================
+=================================================
 
 Contents:
 

doc/source/usage.rst

@@ -1,6 +1,6 @@
-========
+=====
 Usage
-========
+=====
 
 To use python-masakariclient in a project::
 

tox.ini

@@ -7,7 +7,7 @@ skipsdist = True
 usedevelop = True
 install_command = pip install {opts} {packages}
 deps =
-  -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
+  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
   -r{toxinidir}/test-requirements.txt
 whitelist_externals = bash
                       find