Resolve path to clover.jar when packed as OSGI bundle

ClassPathUtil.getCloverJarPath() searches for a JAR in case when URL returned by class loader is like:

jar:file:!/path/to/clover.jar/com/atlassian/clover/util/ClassPathUtil.class

or

file:/path/to/classes/directory/com/atlassian/clover/util/ClassPathUtil.class

However, it does not handle a case for OSGI bundles, which have an URI like:

bundle://28.0:2/com/atlassian/clover/util/ClassPathUtil.class

Fix: use getClass().getProtectionDomain().getCodeSource().getLocation().toURI()