RFR: JDK-8201229 Disable warnings as errors in aarch64 jib profile

[Magnus Ihse Bursie]

The aarch64 profile does not always build without warnings; use 
--disable-as-warnings for the profile to be usable in jib.

Bug: https://bugs.openjdk.java.net/browse/JDK-8201229
Patch inline:
diff --git a/make/conf/jib-profiles.js b/make/conf/jib-profiles.js
--- a/make/conf/jib-profiles.js
+++ b/make/conf/jib-profiles.js
@@ -473,6 +473,7 @@
              dependencies: ["devkit", "autoconf", "build_devkit", "cups"],
              configure_args: [
                  "--openjdk-target=aarch64-linux-gnu", 
"--with-freetype=bundled",
+                "--disable-warnings-as-errors"
              ],
          },

/Magnus