[GR-43971] Support native-image environment variable capturing in bundles.

[graalvmbot]

This PR

• Adds native-image option -E<env-var-key>[=<env-var-value>] and
• Support for environment variable capturing in bundles.

Previously almost all environment variables were simply forwarded to the builder. With this PR we changed the behavior to only have a minimum set of environment variables passed through to the builder. If an image build requires additional access to environment variables during image build-time, the new option

-E<env-var-key>[=<env-var-value>]
                      allow native-image to access the given environment variable during
                      image build. If the optional <env-var-value> is not given, the value
                      of the environment variable will be taken from the environment
                      native-image was invoked from.

has to be used.

To temporarily revert back to the old behaviour, env setting NATIVE_IMAGE_DEPRECATED_BUILDER_SANITATION=true can be used. The old behavior might get removed in a future release.

💡 If you experience image build errors after this PR and using NATIVE_IMAGE_DEPRECATED_BUILDER_SANITATION=true make the errors go away you determined that your image build depends on custom environment variables. Please identify those env-vars and add them to your image build options (with -E).