New Java endpoint that ties into the AdpotOpenJDK builds

Java providers like AdoptOpenJDK have a large number of different java builds across many platforms and an API to find the available versions and download them. Add a new Java endpoint capable of installing any version of Java from AdoptOpenJDK's API

Endpoint IDs are the in the format

<version>_<type>_<arch>_<os>_<jvm-implementation>_<release>

Example:

OpenJDK8_jre_x64_windows_hotspot_8u181b13

Here are the possible options for each section of the ID.

<version> : openjdk8, openjdk9, openjdk10, etc...
<type> : jdk, jre
<arch> : x64, x32, ppc64, s390x, ppc64le, aarch64
<os> : windows, linux, mac
<jvm-implementation> : hotspot, openj9
<release> : latest, jdk8u172, jdk8u172-b00, etc...

For anything not specified in the endpoint ID, the endpoint will default as follows:

• type - jre
• arch - Whatever the current OS arch is
• os - Whatever the current OS is
• JVM-implementation - hotspot
• release - latest

The endpoint will use the local artifacts cache.

Examples:

install java:openjdk8
install java:openjdk8_jre
install java:OpenJDK8_jdk_8u181b13
install java:OpenJDK8_jre_x64_windows_hotspot_8u181b13

Links:
https://api.adoptopenjdk.net/
https://api.adoptopenjdk.net/v2/info/nightly/openjdk8?openjdk_impl=hotspot