RFR: 8286623: Bundle zlib by default with JDK on macos aarch64

[Jaikiran Pai]

Can I please get a review of this change to the build system which now makes bundled zlib as the default for macos aarch64 systems? 

We have been running into various intermittent failures on macos aarch64 systems for several months now. After investigation we have been able to ascertain that the root cause of the issue lies within the zlib that's shipped on macos aarch64 systems. The complete details about that issue is available at https://bugs.openjdk.java.net/browse/JDK-8282954. 
We have filed a bug with Apple for their inputs on what we can do to fix it in that shipped library. Given the nature of that issue, we don't have a timeline on when/if the solution for that will be available. Until that time, at least, the proposal is to use bundled zlib (which doesn't reproduce those failures) by default on macos aarch64.

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Commit messages:
 - jib profile - don't explicitly set system zlib for macosx-aarch64
 - default to bundled zlib on macos aarch64

Changes: https://git.openjdk.java.net/jdk/pull/8675/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8675&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8286623
  Stats: 4 lines in 2 files changed: 2 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8675.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8675/head:pull/8675

PR: https://git.openjdk.java.net/jdk/pull/8675