[4.0.9] Bad container documentation

[hrstoyanov]

The Helidon Jib documentation specify some "good defaults intended for containers" jvm options for running Helidon 4 in container:

            <!-- good defaults intended for containers -->
            <jvmFlags>
                <jmxFlag>-server</jmxFlag>
                <jmxFlag>-Djava.awt.headless=true</jmxFlag>
                <jmxFlag>-XX:+UnlockExperimentalVMOptions</jmxFlag>
                <jmxFlag>-XX:+UseCGroupMemoryLimitForHeap</jmxFlag>
                <jmxFlag>-XX:InitialRAMFraction=2</jmxFlag>
                <jmxFlag>-XX:MinRAMFraction=2</jmxFlag>
                <jmxFlag>-XX:MaxRAMFraction=2</jmxFlag>
                <jmxFlag>-XX:+UseG1GC</jmxFlag>
            </jvmFlags>

However, when used, one gets these warnings:

OpenJDK 64-Bit Server VM warning: Option InitialRAMFraction was deprecated in version 10.0 and will likely be removed in a future release.
OpenJDK 64-Bit Server VM warning: Option MinRAMFraction was deprecated in version 10.0 and will likely be removed in a future release.
OpenJDK 64-Bit Server VM warning: Option MaxRAMFraction was deprecated in version 10.0 and will likely be removed in a future release.

[barchetta]

These should be replaced with *RAMPercentage
Background info: https://bugs.openjdk.org/browse/JDK-8186315