Create api+scenario tests for pools

This patch implements pool tests for the Octavia
Tempest Plugin.

Change-Id: Id8dadfa292a698273240a4d3513288053e7c62c5
Story: 2001387
Task: 5969
diff --git a/.gitignore b/.gitignore
index 5992821..78c2e67 100644
--- a/.gitignore
+++ b/.gitignore
@@ -63,3 +63,7 @@
 
 # PyCharm IDE
 .idea
+
+# Others
+.stestr
+tempest.log