Access Logs contents enhancement

[ErwanLetessier]

#301 lately brought support of access logs.
I would need a couple of more information in those logs:

• request port
• time taken (in milliseconds)

Furthermore, I don't get the point in having the date time with force formatting in the logged message while the logger will add it with user-configured format.

[violetagg]

Furthermore, I don't get the point in having the date time with force formatting in the logged message while the logger will add it with user-configured format.

With the first implementation we support CLF, so we use the specified date format.
When you use this log configuration https://github.com/reactor/reactor-netty/blob/master/src/test/resources/logback.xml#L35 you will receive exactly CLF.

I created another enhancement #436 so that we provide more options for the access log.