Update rule code restrictions

docs/extensibility/rules/index.md

@@ -196,6 +196,41 @@ public static
 XMLObjectFactory
 Log4j
 Logger.getLogger​
+System.exit
+Runtime.
+server
+ServerSocket
+ProcessBuilder
+exec
+exit
+rm
+getRuntime
+shutdownOnExit
+bg
+cp
+desktop
+getBshPrompt
+mv
+run
+pathToFile
+editor
+addClassPath
+bind
+browseClass
+cat
+cd
+classBrowser
+dir
+dirname
+frame
+importCommands
+load
+makeWorkspace
+pwd
+reloadClasses
+setClassPath
+source
+sourceRelative
 ```
 
 Note that the earlier code fragments are not allowed within [connector-executed rules](./connector-rules/index.md#supported-connector-rules) because they are not valid at the connector level. They will, for a short time, still be allowed for pre-existing [cloud-executed rules](./cloud-rules/index.md) as a review exception. However, any new rules using these constructs will be returned to the submitter, and the submitter will be asked to rewrite the rule, using the [ISC Rule Utility](./idn_rule_utility.md) helper methods instead: