Change some commandHandler.ml logging from debug to info
Change some commandHandler.ml logging from debug to info

Summary: Running a flow server in debug mode will write to the `.log` file each time a command is handled. It would be nice if we did this in non-debug mode too. It makes the log a little more verbose, but is super helpful for debugging.

Reviewed By: jbrown215

Differential Revision: D13004112

fbshipit-source-id: 6a6a365134d420e4357a514997f24def8b33bdcf

popham/flow,gabelevi/flow,facebook/flow,mroch/flow,AgentME/flow,mroch/flow,popham/flow,samwgoldman/flow,mroch/flow,facebook/flow,AgentME/flow,AgentME/flow,popham/flow,samwgoldman/flow,facebook/flow,mroch/flow,gabelevi/flow,samwgoldman/flow,samwgoldman/flow,popham/flow,popham/flow,gabelevi/flow,samwgoldman/flow,popham/flow,popham/flow,AgentME/flow,samwgoldman/flow,gabelevi/flow,mroch/flow,mroch/flow,mroch/flow,samwgoldman/flow,gabelevi/flow,gabelevi/flow,facebook/flow,facebook/flow,facebook/flow,AgentME/flow,facebook/flow,gabelevi/flow