Update URL from "http" to "https"

Most of them can still be visited through http, but the following
one is necessary to update, so I change them all by this chance.

 $ git clone http://git.openstack.org/openstack/tempest

Change-Id: I2b4da0670b599666e7151bddfff0fa6655640bc4
diff --git a/HACKING.rst b/HACKING.rst
index 8407734..c942cb1 100644
--- a/HACKING.rst
+++ b/HACKING.rst
@@ -84,7 +84,7 @@
 It is recommended to use testtools `matcher`_ for the more tricky assertions.
 You can implement your own specific `matcher`_ as well.
 
-.. _matcher: http://testtools.readthedocs.org/en/latest/for-test-authors.html#matchers
+.. _matcher: https://testtools.readthedocs.org/en/latest/for-test-authors.html#matchers
 
 If the test case fails you can see the related logs and the information
 carried by the exception (exception class, backtrack and exception info).
@@ -178,7 +178,7 @@
 All negative tests should be based on `API-WG guideline`_ . Such negative
 tests can block any changes from accurate failure code to invalid one.
 
-.. _API-WG guideline: http://specs.openstack.org/openstack/api-wg/guidelines/http.html#failure-code-clarifications
+.. _API-WG guideline: https://specs.openstack.org/openstack/api-wg/guidelines/http.html#failure-code-clarifications
 
 If facing some gray area which is not clarified on the above guideline, propose
 a new guideline to the API-WG. With a proposal to the API-WG we will be able to
diff --git a/README.rst b/README.rst
index c67362a..c087f29 100644
--- a/README.rst
+++ b/README.rst
@@ -2,7 +2,7 @@
 Team and repository tags
 ========================
 
-.. image:: http://governance.openstack.org/badges/tempest.svg
+.. image:: https://governance.openstack.org/badges/tempest.svg
     :target: https://governance.openstack.org/tc/reference/tags/index.html
 
 .. Change things from this point on
@@ -61,7 +61,7 @@
 #. You first need to install Tempest. This is done with pip after you check out
    the Tempest repo::
 
-    $ git clone http://git.openstack.org/openstack/tempest
+    $ git clone https://git.openstack.org/openstack/tempest
     $ pip install tempest/
 
    This can be done within a venv, but the assumption for this guide is that
@@ -133,7 +133,7 @@
 
 Release Versioning
 ------------------
-`Tempest Release Notes <http://docs.openstack.org/releasenotes/tempest>`_
+`Tempest Release Notes <https://docs.openstack.org/releasenotes/tempest>`_
 shows what changes have been released on each version.
 
 Tempest's released versions are broken into 2 sets of information. Depending on
diff --git a/REVIEWING.rst b/REVIEWING.rst
index 7d28320..5e08a6b 100644
--- a/REVIEWING.rst
+++ b/REVIEWING.rst
@@ -2,7 +2,7 @@
 ======================
 
 To start read the `OpenStack Common Review Checklist
-<http://docs.openstack.org/infra/manual/developers.html#peer-review>`_
+<https://docs.openstack.org/infra/manual/developers.html#peer-review>`_
 
 
 Ensuring code is executed
@@ -16,7 +16,7 @@
 If a new test is added that depends on a new config option (like a feature
 flag), the commit message must reference a change in DevStack or DevStack-Gate
 that enables the execution of this newly introduced test. This reference could
-either be a `Cross-Repository Dependency <http://docs.openstack.org/infra/
+either be a `Cross-Repository Dependency <https://docs.openstack.org/infra/
 manual/developers.html#cross-repository-dependencies>`_ or a simple link
 to a Gerrit review.