Refactor the god class JBossServiceXmlDescriptorParser

Refactor the classes JBossServiceXmlDescriptorParser and JBossServiceConfig from SAR by adding a parametized constructor for JBossServiceConfig. This is done so that JBossServiceXmlDescriptorParser does not call multiple set methods for each attribute while returning an object of JBossServiceConfig in the method parseMBean and uses the parametized constructor instead.