Java 10: Update asm and use latest asm for maven-shade-plugin.
Java 10: Update asm and use latest asm for maven-shade-plugin.

Problem shading JAR vespa-http-client.jar entry
    com/yahoo/vespa/http/client/Result$ResultType.class:
        java.lang.IllegalArgumentException

IllegalArgumentException
    at org.objectweb.asm.ClassReader.<init> (ClassReader.java:160)

vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa