Configuration INI trailing spaces - regression

[alon-e]

Bug description

In current dev c3087ae setting a Coo with trailing spaces will result in an unclear exception:

Exception in thread "main" java.lang.IllegalArgumentException: Destination array is not large enough.
	at com.iota.iri.utils.Converter.trits(Converter.java:93)
	at com.iota.iri.model.HashFactory.create(HashFactory.java:48)
	at com.iota.iri.MilestoneTracker.<init>(MilestoneTracker.java:72)
	at com.iota.iri.Iota.<init>(Iota.java:56)
	at com.iota.iri.IRI$IRILauncher.main(IRI.java:69)
	at com.iota.iri.IRI.main(IRI.java:31)

This does not happen in v1.5.4 (latest release at the time) so it is either related to #969 or #724

if related to Conf rework then it's worth looking at other places where this might happen in the INI file.
this can be set to wont-fix, but then it should be mentioned in the release notes as a known issue.

Steps To Reproduce

1. set iota.iri to:

[IRI]
ZMQ_ENABLED = TRUE
TESTNET = TRUE
MWM = 9
SNAPSHOT_FILE = conf/snapshot.txt
COORDINATOR = NPCRMHDOMU9QHFFBKFCWFHFJNNQDRNDOGVPEVDVGWKHFUFEXLWJBHXDJFKQGYFRDZBQIFDSJMUCCQVICI 
MILESTONE_START_INDEX = 2
KEYS_IN_MILESTONE = 10
MAX_DEPTH = 1000

2. run IRI on that commit.
3. it will fail with the aformentioned Exception.

Expected behaviour

Not sure, but I would expect trailing spaces to be trimmed.

Actual behaviour

Unclear exit

Errors

Posted above.

[cyclux]

Similar exception happens in case of unknown characters or format within the NEIGHBORS parameter. #1024 might already fix this as well though.