Bug Report: run_sysmon() generates IndexError if mask is not sequential

Brief summary of issue

The run_sysmon() of sca_utils.py will generate an IndexError if the ohMask is not sequential.

Types of issue

[X] Bug report (report an issue with the code)
[ ] Feature request (request for change which adds functionality)

Expected Behavior

An IndexError should not be created.

Current Behavior

Consider following block:

https://github.com/cms-gem-daq-project/reg_utils/blob/5cd2e893db30db1a5f7535515ed79c3356a8f1ab/python/reg_interface/common/sca_utils.py#L57-L60

if there are two OH's and the mask 0x1 is used ohList will be [ 0 ] and adcX container (for X = 1, 2 or 3) will have len == 1 starting at 0. If 0x3 is used then ohList will be [ 0, 1]; adcX will have len == 2 and have indices 0 and 1.

However if mask 0x2 is used ohList will be [ 1 ] and adcX container will have len == 1 starting at index 0. So this will generate an IndexError.

Steps to Reproduce (for bugs)

Have at least one OHv3, then
Place this OHv3 on link 1, then
Call sca.py eagle63 0x2 sysmon

Possible Solution (for bugs)

Investigating.

Context (for feature requests)

Your Environment

Version used: Found this bug in an older tag of xhal but figured it should be reported here.
Shell used: /bin/bash

cms-gem-daq-project / reg_utils