Java11 support - clean version

[svanoort]

Clean version of #67 which pulls in the released versions.

TODO:

• Verify this is safe to run with Java 8 (no issues from the JBoss Marshalling bump)
• Test upgrading to this version with Pipelines running from old version
• Add Enforcer exclusion for this JBoss Marshalling to allow use of multi-release JAR there.

[svanoort]

Still able to run Pipelines and start Jenkins with Java 8 on core 2.89.x -- as long as we revert the core dependency bump so it does not require 1.129 releases.

This means the JBoss marshalling dependency is clean - barring enforcer grumbling about the multi-release JAR usage.

[oleg-nenashev]

@jenkinsci/java10-support

[oleg-nenashev]

O'd guess it requires jenkinsci/plugin-pom#113 to be finalized so that tests are reenabled

[oleg-nenashev]

Now you can update to 3.17 with newer Animal Sniffer

[jglick]

Perhaps better to @Ignore those so reviewers can see exactly what is still broken.

[jglick]

Where it the upstream bug?

[svanoort]

@oleg-nenashev Note: the JBoss marshalling change is not back-compatible in the binary format -- that merits a serious upgrade warning (CompatibleSince, etc).

Does not appear to have a memory leak, after tens of thousands of builds.

Build code, with build rotation set to keep last 100 builds.

class Animal {
    String code;
    
    public Animal(String entry) {
        this.code = entry;
    }
}

for(int i=0; i<5; i++) {
    Animal an = new Animal("named"+i);
}

for (int i=0;i<5; i++) {
    echo 'cheese'
}

[oleg-nenashev]

Deployed the current version as 2.23-20181122.094059-1

[oleg-nenashev]

CC @jenkinsci/java11-support

[batmat]

I confirm using the SNAPSHOT deployed by @oleg-nenashev I'm able to remove the immediate JBoss Marshalling related Pipeline crash. I tested only on a Hello World on a fresh instance though. Testing a bit more deeply.