RFR: JDK-8204922: Create bootcycle jib profiles

[Magnus Ihse Bursie]

Looks good to me. 

/Magnus

> 13 juni 2018 kl. 02:34 skrev Erik Joelsson <erik.joelsson at oracle.com>:
> 
> In order to test bootcycle builds more easily at Oracle, we need specific jib profiles for them. This patch adds that. I also make the linux-aarch64 profile explicitly build the aarch64 port instead of the arm64 port as well as disable warnings-as-errors since we currently have the readdir warning in that configuration.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8204922
> 
> Webrev: http://cr.openjdk.java.net/~erikj/8204093/webrev.01/
> 
> /Erik
>