Capture more harvest errors

[nickumia-reisys]

Related to

• catalog harvest error not reported data.gov#3532

[github-actions]

✅ Result of Pytest Coverage

---------- coverage: platform linux, python 3.8.10-final-0 -----------

Name	Stmts	Miss	Cover
ckanext/datajson/init.py	6	6	0%
ckanext/datajson/blueprint.py	222	46	79%
ckanext/datajson/datajson.py	442	118	73%
ckanext/datajson/datajsonvalidator.py	71	71	0%
ckanext/datajson/exceptions.py	2	0	100%
ckanext/datajson/harvester_base.py	3	0	100%
ckanext/datajson/harvester_cmsdatanavigator.py	63	63	0%
ckanext/datajson/harvester_datajson.py	53	17	68%
ckanext/datajson/helpers.py	111	43	61%
ckanext/datajson/package2pod.py	302	164	46%
ckanext/datajson/parse_datajson.py	105	32	70%
ckanext/datajson/plugin.py	34	1	97%
TOTAL	1414	561	60%
Required	test	coverage	of
==================	34	passed,	3881

[nickumia-reisys]

Superseded by:

• Fix more harvest errors (properly) 🃏  #131