Add release not to mark the start of Pike support

This commit adds the release note necessary for version 17.0.0.

Change-Id: I9193c5529298085b344cd7758ac42435474ac9ee
diff --git a/releasenotes/notes/start-of-pike-support-f2a1b7ea8e8b0311.yaml b/releasenotes/notes/start-of-pike-support-f2a1b7ea8e8b0311.yaml
new file mode 100644
index 0000000..0787821
--- /dev/null
+++ b/releasenotes/notes/start-of-pike-support-f2a1b7ea8e8b0311.yaml
@@ -0,0 +1,11 @@
+---
+prelude: >
+    This release marks the start of support for the Pike release in Tempest.
+other:
+    - OpenStack Releases supported after this release are **Pike**, **Ocata**,
+      and **Newton**.
+
+      The release under current development of this tag is Queens, meaning
+      that every Tempest commit is also tested against master during the Queens
+      cycle. However, this does not necessarily mean that using Tempest as of
+      this tag will work against a Queens (or future release) cloud.