Check input URIs to avoid potential security vulnerability

[jordanpadams]

preparation/transform/src/main/java/gov/nasa/pds/transform/constants/Constants.java	90	Local-user-controlled data in path expression (CWE-022)	Local-user-controlled data in path expression (CWE-022).  Accessing paths influenced by users can allow an attacker to access unexpected resources.	Y	Will investigate a fix.		3	CWE-022	Test extended variable to ensure no special characters before being opened potential redirect vulnerability.