tests: ignore failure status from mdadm -IRs

This can report non-zero if there was nothing to do,
and that isn't really an error.
If the array doesn't get started, something else
will complain.

Signed-off-by: NeilBrown <neilb@suse.de>

tests/10ddf-assemble-missing

@@ -23,7 +23,7 @@ mdadm -I $dev10
 mdadm -I $dev11
 
 # Start runnable members
-mdadm -IRs
+mdadm -IRs || true
 mdadm -Ss
 
 #[ -f /var/tmp/mdmon.log ] && cat /var/tmp/mdmon.log

tests/10ddf-fail-stop-readd

@@ -30,7 +30,7 @@ mdadm -Ss
 sleep 1
 # Now simulate incremental assembly
 mdadm -I $good0
-mdadm -IRs
+mdadm -IRs || true
 
 # Write to the array
 mke2fs $member0

tests/10ddf-incremental-wrong-order

@@ -30,7 +30,7 @@ mdadm -I $dev10
 mdadm -I $dev11
 
 # Start runnable members ($member1) and write
-mdadm -IRs
+mdadm -IRs || true
 e2fsck -fy $member1
 sha_1b=$(sha1_sum $member1)
 
@@ -59,7 +59,7 @@ for d in $dev8 $dev9 $dev10 $dev11; do
     mdadm -I $d  
 done
 
-mdadm -IRs
+mdadm -IRs || true
 sha_0c=$(sha1_sum $member0)
 sha_1c=$(sha1_sum $member1)