Rename state_machine to state
Rename state_machine to state

To conform to the other dissectors.

Wingless-Archangel/haka,haka-security/haka,nabilbendafi/haka,nabilbendafi/haka,LubyRuffy/haka,LubyRuffy/haka,lcheylus/haka,haka-security/haka,lcheylus/haka,nabilbendafi/haka,haka-security/haka,Wingless-Archangel/haka,lcheylus/haka