Java: Allow <> in types for now.

Author: aschackmull

java/ql/src/semmle/code/java/dataflow/ExternalFlow.qll

@@ -481,7 +481,7 @@ module CsvValidation {
       not namespace.regexpMatch("[a-zA-Z0-9_\\.]+") and
       msg = "Dubious namespace \"" + namespace + "\" in " + pred + " model."
       or
-      not type.regexpMatch("[a-zA-Z0-9_\\$]+") and
+      not type.regexpMatch("[a-zA-Z0-9_\\$<>]+") and
       msg = "Dubious type \"" + type + "\" in " + pred + " model."
       or
       not name.regexpMatch("[a-zA-Z0-9_]*") and