ENYO-3851: storage root allowed to search projects

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-3851

* resolves an ambiguity about the service informations embedded within an HermesNode
* restore the possibilty to search projects from the root storage

Enyo-DCO-1.1-Signed-off-by: Vincent HERILIER vincent.herilier@hp.com