Replace http with https for doc links in octavia-dashboard

1) Update doc links according to OpenStack document migration
2) Use https instead of http for docs links

Change-Id: Ie26e0fc4b3d0635981e752892c37a06df0ac36be

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

octavia_dashboard/tests/integration_tests/horizon.conf

@@ -10,7 +10,7 @@ dashboard_url=http://localhost/dashboard/
 login_url=http://localhost/dashboard/auth/login/
 
 # Dashboard help page url (string value)
-help_url=http://docs.openstack.org/
+help_url=https://docs.openstack.org/
 
 [selenium]
 # Timeout in seconds to wait for a page to become available

octavia_dashboard/tests/settings.py

@@ -67,7 +67,7 @@ HORIZON_CONFIG = {
         "help_text": "Password must be between 8 and 18 characters."
     },
     'user_home': None,
-    'help_url': "http://docs.openstack.org",
+    'help_url': "https://docs.openstack.org",
     'exceptions': {'recoverable': exceptions.RECOVERABLE,
                    'not_found': exceptions.NOT_FOUND,
                    'unauthorized': exceptions.UNAUTHORIZED},