Add Istep Power On/Host initd Reset to boot_lists

 - Two new boot tests were added and corresponding boot_lists files
     needed updating.

data/boot_lists/All
data/boot_lists/Manufacturing
data/boot_lists/OBMC_reboot
data/boot_lists/OS_reboot
data/boot_lists/Power_on
bin/plug_ins/Soft_errors/cp_post_boot: Minor output correction

Signed-off-by: David Shaw <dlshaw@us.ibm.com>
Change-Id: I17410b6228c6c2a3b2f619489d70c69f636922d7
diff --git a/data/boot_lists/Power_on b/data/boot_lists/Power_on
index ce28a98..8dc0b6a 100755
--- a/data/boot_lists/Power_on
+++ b/data/boot_lists/Power_on
@@ -4,3 +4,5 @@
 Redfish Power On (mfg)
 IPMI Power On
 IPMI Power On (mfg)
+Istep Power On
+Istep Power On (mfg)