Allow JAVA_HOME and PATH to be configured from installer

[EricEdens]

@jim-pickering in #14:

It would also be nice if Corretto would set the JAVA_HOME environment variable with the installer too. Zulu does that.

[Lock128]

I would like to add that we would need to have the possibility to pass the installation path

So in fact we would like to have this part here working:
// does not work, properties unknown, tried some others too
msiexec /i "jre-8u144-windows-x64.exe" TARGETDIR="C:\Program Files\Java\JDK8" /quiet /passive

Should this be a different ticket? I think if you allow to change the JAVA_HOME, you also need to allow TARGETDIR!

[yoroto]

This issue is fixed in the new Corretto preview release (1.8.0_192-amazon-corretto-preview2-b12). Change log of this release is now available. You can find the builds in the Corretto download page. Please let us know if you have any further questions. We appreciate your suggestion!

@Lock128 You need to use INSTALLDIR rather than TARGETDIR with the new installer for the silent install option.