private List<Bundle> installBundleFromDisk(String bundlePath) {
        log.log(Level.FINE, "Installing bundle from disk: " + bundlePath);
        List<Bundle> bundles = installer.installBundles(bundlePath, osgi);
        log.log(Level.FINE, "Installed " + bundles.size() + " bundles for file " + bundlePath);
        return bundles;
    }
Used to install the bundles that are added as platform bundles by the config-model.

All platform bundles reside on disk, and they are never uninstalled.
Platform bundles are allowed to pre-install other bundles on disk via the
X-JDisc-Preinstall-Bundle manifest header.

Attempts to install additional bundles, after the first call, should be a NOP.

@author gjoranv
container-core/src/main/java/com/yahoo/container/core/config/PlatformBundleLoader.java