storagehandler: move Add SEL to new API

Rewrite "Add SEL Entry" command to use the newly
introduced IPMI provider API.

Tested:
Verified the behavior to be same as previous change.

ipmitool raw 0x0a 0x44 1 0 0xff 4 5 6 7 8 9 0 1 2 3 4 5 6
05 06

Signed-off-by: anil kumar appana <anil.kumarx.appana@intel.com>
Change-Id: I49bad876a209fb55f1b5b635b5a4ded425d33af0
2 files changed