Add blazar project to project-data

Blazar project became an official project in Queens cycle. This
patch appends a reference for blazar docs.

Change-Id: Id512d777ae7f46d212f67fd887a9a2a97b488538

www/project-data/latest.yaml

@@ -709,6 +709,15 @@
   type: service-client
   description: karbor client
 
+- name: blazar
+  service: Resource reservation service
+  service_type: reservation
+  has_install_guide: true
+  has_config_ref: true
+  has_admin_guide: true
+  has_user_guide: true
+  type: service
+
 # - name: python-monascaclient
 #   service: Monitoring client
 #   type: service-client