terraform: closer match to reality

Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Change-Id: I75e2d28a6faf53d5024ef7c963e659fda1ad5cb5
diff --git a/infra.tf b/infra.tf
index b142def..da19792 100644
--- a/infra.tf
+++ b/infra.tf
@@ -37,7 +37,7 @@
 
 #servers
 resource "aws_instance" "staging-ci" {
-    ami           = "ami-0286372f78291e588"
+    ami           = "ami-0ac80df6eff0e70b5"
     instance_type = "t3.large"
     # hardcoding for the time being.  In the future we may want
     # to split staging off to its own subnet.