Update URLs in documentation

Update URLs according to OpenStack document migration.
BTW: Do some optimization as well (http -> https)

Change-Id: Ie0a5e08a0611715c6cb775b875b4fcae3b622780

CONTRIBUTING.rst

@@ -1,14 +1,14 @@
 If you would like to contribute to the development of OpenStack, you must
 follow the steps in this page:
 
-   http://docs.openstack.org/infra/manual/developers.html
+   https://docs.openstack.org/infra/manual/developers.html
 
 If you already have a good understanding of how the system works and your
 OpenStack accounts are set up, you can skip to the development workflow
 section of this documentation to learn how changes to OpenStack should be
 submitted for review via the Gerrit tool:
 
-   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.
 

HACKING.rst

@@ -1,4 +1,4 @@
 Style Commandments
 ===============================================
 
-Read the OpenStack Style Commandments http://docs.openstack.org/developer/hacking/
+Read the OpenStack Style Commandments https://docs.openstack.org/hacking/latest/

README.rst

@@ -39,8 +39,8 @@ Karbor Mission Statement
 .. _Blueprints: https://blueprints.launchpad.net/python-karborclient
 .. _Bugs: https://bugs.launchpad.net/python-karborclient
 .. _Source: https://git.openstack.org/cgit/openstack/python-karborclient
-.. _Specs: http://docs.openstack.org/developer/karbor/specs/index.html
-.. _How to Contribute: http://docs.openstack.org/infra/manual/developers.html
+.. _Specs: https://docs.openstack.org/karbor/latest/specs/index.html
+.. _How to Contribute: https://docs.openstack.org/infra/manual/developers.html
 
 
 Python Karborclient
@@ -62,7 +62,7 @@ Project status, bugs, and blueprints are tracked on Launchpad:
 
 Developer documentation can be found here:
 
-  http://docs.openstack.org/developer/karbor
+  https://docs.openstack.org/karbor/latest/
 
 Additional resources are linked from the project wiki page:
 

doc/source/specs/karbor-support-in-python-openstackclient.rst

@@ -158,7 +158,7 @@ OpenStack Client adoption list will be updated to include python-karborclient.
 References
 ==========
 
-http://docs.openstack.org/developer/python-openstackclient/commands.html
+https://docs.openstack.org/python-openstackclient/latest/
 
 Appendix
 ========

karborclient/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
 
 """