[CORD-3182]

Pin the version of kubespray to master commit
Check for k8s config file and error if not present

Change-Id: I09a54cb8e03b020adb5bdd3e7ab9d7c92200a8ac
diff --git a/kubespray-installer/.gitignore b/kubespray-installer/.gitignore
index ab99130..b032f2b 100644
--- a/kubespray-installer/.gitignore
+++ b/kubespray-installer/.gitignore
@@ -1,2 +1,3 @@
 kubespray
-*.retry
\ No newline at end of file
+inventories
+*.retry