P4Groovy should allow saving specs with addtional flags.

for example, I want to run "p4 job -f -i" or "p4 change -f -i".

Sample new methods to P4Groovy.java:
public Map<String, Object>[] save(String type, Map<String, Object> spec, String... args)
public Map<String, Object>[] save(String type, Map<String, Object> spec, String[] args)