Release os-testr 1.0.0

This commit releases os-testr 1.0.0, this is a major version bump
because it changes the testr runner used internally from testr to
stestr. This cleans up the code significantly and also means we stop
calling python via subprocess. However because stestr and testr aren't
100% compatible this has the potential to not be backwards compatible.
Since we're quite early in the queens cycle this is the best time to
make a release like this.

Change-Id: If9be85acf2454861e08e62ad4881e164bbec753f

deliverables/_independent/os-testr.yaml

@@ -56,3 +56,10 @@ releases:
     highlights: |
         Remove babel from requirements since its not
         used by os-testr, and update to latest g-r.
+  - version: 1.0.0
+    projects:
+      - repo: openstack/os-testr
+        hash: 7dd678e3720c326afb3ca7adfd01ec7324d5f5c7
+    highlights: |
+        ostestr command switched to use stestr internally instead of
+        subprocessing to testr.