Unhide imds error messages

imds drivers may print error messages to stderr. Do not hide those.

bin/imds

@@ -122,7 +122,7 @@ imds() {
             *) args="$key" ;;
         esac
         # TODO: retry/deadline
-        "$cmd" $args 2>/dev/null
+        "$cmd" $args
         rv=$?
         [ $err -eq 0 ] && continue
         [ $rv = "0" ] || return $rv

tests/init-final.test

@@ -48,7 +48,7 @@ run_userdata_body() {
 		#!/bin/sh
 		echo "hello from user-data"
 	EOF
-	CLOUD="nocloud" atf_check \
+	CLOUD="nocloud" atf_check -e match:"NoCloud 'meta-data' is empty" \
 		sh -c ". \"$lib\"; init__save_userdata"
 	CLOUD="nocloud" atf_check \
 		-o match:"hello from user-data" \

tests/init-main.test

@@ -69,7 +69,7 @@ save_userdata_plain_body() {
 	fake_userdata_nocloud <<-EOF
 		#userdata
 	EOF
-	CLOUD="nocloud" atf_check \
+	CLOUD="nocloud" atf_check -e match:"NoCloud 'meta-data' is empty" \
 		sh -c ". \"$lib\"; init__save_userdata"
 	atf_check -o match:"^#userdata" cat var/lib/cloud/user-data
 }