Add support for iterating over EC_LEVELS

    -Add support for looping over various EC levels for
     SCOM and Scan init files

Change-Id: Iba910eb5cd512dfe0fcfa6e6b0eb4791e4d7e008
Original-Change-Id: I7463b71698856922829cddc0e4d8d179803a1db8
RTC:159043
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/31688
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Benjamin Gass <bgass@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Joseph J. McGill <jmcgill@us.ibm.com>
Reviewed-by: Prachi Gupta <pragupta@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/36655
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Tested-by: Daniel M. Crowell <dcrowell@us.ibm.com>