[CURATOR-464] update classifier and document accordingly

pom.xml

@@ -971,7 +971,7 @@
                                 <artifact>
                                     <file>${project.build.directory}/original-${project.build.finalName}.jar</file>
                                     <type>jar</type>
-                                    <classifier>original</classifier>
+                                    <classifier>osgi</classifier>
                                 </artifact>
                             </artifacts>
                             <skipAttach>${skip-attaching-original-artifact}</skipAttach>

src/site/confluence/index.confluence

@@ -35,6 +35,10 @@ h2. Maven / Artifacts
 Curator binaries are published to Maven Central. Curator consists of several artifacts. Which artifacts to use depends on your needs. For
 most users, the only artifact you need is curator\-recipes.
 
+For OSGi users, there's another set of artifacts of classifier osgi available in Maven Central. These artifacts are not
+shaded, thus no package relocation is performed inside, so hopefully they could start as bundles when their dependencies
+are fulfilled by dedicated bundles, e.g. guava.
+
 ||GroupID/Org||ArtifactID/Name||Description||
 |org.apache.curator|curator\-recipes|All of the recipes. Note: this artifact has dependencies on client and framework and, so, Maven (or whatever tool you're using) should pull those in automatically.|
 |org.apache.curator|curator\-async|Asynchronous DSL with O/R modeling, migrations and many other features.|