Set -o pipefail new scripts

A few scripts were added without set -o pipefail since the original
change to add that everywhere.  This will get the dib-lint check
passing again.

Change-Id: I96bef45cc10ff9bbcf2c4f1b796b8cd188e10485

elements/debian/bin/map-services

@@ -1,5 +1,6 @@
 #!/bin/bash
 set -eu
+set -o pipefail
 
 # For Debian map-services is currently a noop
 # We pass through the service name directly

elements/fedora/pre-install.d/01-set-fedora-mirror

@@ -1,6 +1,7 @@
 #!/bin/bash
 
 set -eu
+set -o pipefail
 
 DIB_DISTRIBUTION_MIRROR=${DIB_DISTRIBUTION_MIRROR:-}
 

elements/ubuntu/bin/map-services

@@ -1,5 +1,6 @@
 #!/bin/bash
 set -eu
+set -o pipefail
 
 # For Ubuntu map-services is currently a noop
 # We pass through the service name directly