lava-expect/openembedded.inc: fix shutdown sequence

LAVA interactive actions commands, in this case 'shutdown -r', execute
as soon as defined, before waiting for the prompt
'root@genericarmv8:~#', so this change first waits for the prompt,
then execute the command.

Signed-off-by: Leonardo Sandoval <leonardo.sandoval@linaro.org>
Change-Id: I203d54fe89b8ac7055e7d18c9a17669d8b85da20
diff --git a/lava-expect/openembedded.inc b/lava-expect/openembedded.inc
index f3378e3..75137b5 100644
--- a/lava-expect/openembedded.inc
+++ b/lava-expect/openembedded.inc
@@ -9,4 +9,5 @@
 #
 
 expect_string+=('i;INIT:')
-expect_string+=('i;root@genericarmv8:~#;(Power down|System halted);;shutdown -h now\r')
+expect_string+=('i;root@genericarmv8:~#')
+expect_string+=('i;(Power down|System halted);;;shutdown -h now')