packer_*.json: deploy to eu-central-1 as well

By setting the attribute "ami_regions", we can
specify multiple regions where the built AMI
will be copied after a success.  Although
they will have different AMI ids, they should
all have the same AMI names.

This will add some time to the end of the build
process for the copy operation.

Signed-off-by: Kelley Spoon <kelley.spoon@linaro.org>
Change-Id: I721cd205efa2ce7d6ba3b5bc11afdca4484fd387
diff --git a/packer_freebsd.json b/packer_freebsd.json
index e148375..bc442c8 100644
--- a/packer_freebsd.json
+++ b/packer_freebsd.json
@@ -21,6 +21,7 @@
       "instance_type": "t3.medium",
       "ssh_username": "{{user `ssh_username`}}",
       "ami_name": "jenkins-freebsd-amd64-{{isotime \"2006-01-02-1504\"}}",
+      "ami_regions": ["eu-central-1"],
       "ami_users": [
         "987685672616"
       ],
diff --git a/packer_ubuntu.json b/packer_ubuntu.json
index 43c09ba..139d6a8 100644
--- a/packer_ubuntu.json
+++ b/packer_ubuntu.json
@@ -25,6 +25,7 @@
       "ami_users": [
         "987685672616"
       ],
+      "ami_regions": ["eu-central-1" ],
       "snapshot_users": [
 	"987685672616"
       ],