do not restrict the original filename

There is no reason to not allow any character here that is allowed in
the file system. This is only used to set the value of an environment
variable.

Author: mawinter69

src/main/java/io/jenkins/plugins/file_parameters/AbstractFileParameterValue.java

@@ -34,6 +34,7 @@
 import hudson.model.ParameterValue;
 import hudson.model.Run;
 import hudson.model.TaskListener;
+import java.io.File;
 import java.io.FilterInputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -59,14 +60,9 @@ public final String getFilename() {
     }
 
     final void setFilename(String filename) {
-        try {
-            Jenkins.checkGoodName(filename);
-            this.filename = filename;
-        } catch (Failure x) {
-            // Ignore and leave the filename undefined.
-            // FileItem.getName Javadoc claims Opera might pass a full path.
-            // This is a best effort anyway (scripts should be written to tolerate an undefined name).
-        }
+        // FileItem.getName Javadoc claims Opera might pass a full path, so strip to just the name.
+        // This is a best effort anyway (scripts should be written to tolerate an undefined name).
+        this.filename = new File(filename).getName();
     }
 
     protected InputStream open(@CheckForNull Run<?,?> build) throws IOException, InterruptedException {