STANBOL-1081: an other change that ensures that the context classloader is set to the bundle classloader while initialising the OsgiSolrResourceLoader, because the super implementation (SolrResourceLoader) inits the SPI table during initialisation

git-svn-id: https://svn.apache.org/repos/asf/stanbol/trunk@1490551 13f79535-47bb-0310-9956-ffa450edef68