Update and optimize documentation links

1. Update the outdated links
2. Optimize (e.g. http -> https)

Change-Id: I0a30b1627d618142382cca5f8c25ce33ef9003ea

CONTRIBUTING.rst

@@ -1,13 +1,13 @@
 If you would like to contribute to the development of OpenStack,
 you must follow the steps documented at:
 
-   http://docs.openstack.org/infra/manual/developers.html
+   https://docs.openstack.org/infra/manual/developers.html
 
 Once those steps have been completed, changes to OpenStack
 should be submitted for review via the Gerrit tool, following
 the workflow documented at:
 
-   http://docs.openstack.org/infra/manual/developers.html#development-workflow
+   https://docs.openstack.org/infra/manual/developers.html#development-workflow
 
 Pull requests submitted through GitHub will be ignored.
 

README.rst

@@ -2,8 +2,8 @@
 Team and repository tags
 ========================
 
-.. image:: http://governance.openstack.org/badges/python-senlinclient.svg
-    :target: http://governance.openstack.org/reference/tags/index.html
+.. image:: https://governance.openstack.org/tc/badges/python-senlinclient.svg
+    :target: https://governance.openstack.org/tc/reference/tags/index.html
 
 .. Change things from this point on
 

senlinclient/common/i18n.py

@@ -12,7 +12,7 @@
 
 """
 oslo_i18n integration module.
-See http://docs.openstack.org/developer/oslo.i18n/usage.html
+See https://docs.openstack.org/oslo.i18n/latest/user/usage.html
 """
 
 import oslo_i18n

setup.py

@@ -18,7 +18,7 @@ import setuptools
 
 # In python < 2.7.4, a lazy loading of package `pbr` will break
 # setuptools if some other modules registered functions in `atexit`.
-# solution from: http://bugs.python.org/issue15881#msg170215
+# solution from: https://bugs.python.org/issue15881#msg170215
 try:
     import multiprocessing  # noqa
 except ImportError: