TianYang: if logged in, log out first
TianYang: if logged in, log out first

git-svn-id: b9fd73d9eafdd47b4b433ab50911a2bc33c03bd0@22299 e7cb0379-d053-0e4b-a1ac-43c7dbffadbe

kii-dev-jenkins/KiiFileStorageSampleApp