Adds a pool client authentication scenario test

This patch adds a pool client authentication scenario test that uses
test servers that require client authentication.

Change-Id: Id5b200954cdf02280d31ed910012a1591a2d2697
diff --git a/releasenotes/notes/add-pool-client-auth-scenario-02abca554e60d3da.yaml b/releasenotes/notes/add-pool-client-auth-scenario-02abca554e60d3da.yaml
new file mode 100644
index 0000000..b14517f
--- /dev/null
+++ b/releasenotes/notes/add-pool-client-auth-scenario-02abca554e60d3da.yaml
@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    Added scenario test coverage for pool client authentication.