CodeQL:  Potential overflow in test code

CodeQL scan found several places in DCS test code that could result in an overflow condition.
See: https://sonarcloud.io/project/issues?impactSeverities=MEDIUM&impactSoftwareQualities=SECURITY&rules=external_CodeQL%3Ajava%2Finteger-multiplication-cast-to-long&issueStatuses=OPEN%2CCONFIRMED&id=NASA-AMMOS_KMC
