Enable @surpressWarnings for Checkstyle

Enable @surpressWarnings for Checkstyle

Documentation is a bit ambigous but below changes should enable
@SupressWarnings (in source code) for checkstyle rules
we have some false positives from Checkstyle we want to supress this way
e.g. https://tinyurl.com/4b527vvr lines 258/259; checkstyle forced us
to add those lines, instead I want to supress the warning on this method
using annotation like @supresswraning(checkstyle:missingSwitchDefault))

Issue-ID: CPS-475
Signed-off-by: ToineSiebelink <toine.siebelink@est.tech>
Change-Id: I07f865a279b4951f2ce3240fedcec6b5c46933e0