Add Otavia docs for xena release

Octavia projects were not initially included in the Xena project index.

Change-Id: Ib4b8ec00e19d00973d2e69cf3686abdd3fd55d22

www/project-data/xena.yaml

@@ -635,19 +635,19 @@
 #  has_user_guide: true
 #  has_install_guide: true
 
-#- name: octavia
-#  service: Load-balancer service
-#  service_type: load-balancer
-#  has_install_guide: true
-#  has_api_ref: true
-#  has_config_ref: true
-#  has_admin_guide: true
-#  type: service
-#  has_user_guide: true
-#- name: python-octaviaclient
-#  service: Load-balancer service client
-#  type: service-client
-#  description: octavia client
+- name: octavia
+  service: Load-balancer service
+  service_type: load-balancer
+  has_install_guide: true
+  has_api_ref: true
+  has_config_ref: true
+  has_admin_guide: true
+  type: service
+  has_user_guide: true
+- name: python-octaviaclient
+  service: Load-balancer service client
+  type: service-client
+  description: octavia client
 
 - name: blazar
   service: Resource reservation service