Merge pull request #100 from jetstack/update-version-agent-0.1.39

Author: j-fuentes

internal/cluster/templates/agent.yaml

@@ -33,7 +33,7 @@ spec:
             secretName: agent-credentials
       containers:
         - name: agent
-          image: quay.io/jetstack/preflight:v0.1.38
+          image: quay.io/jetstack/preflight:v0.1.39
           args:
             - "agent"
             - "-c"