[webapi][hotfix] Change 8L to long number in sso tests

-Fail reason: tizen.sso is undefined

Impacted tests(approved): new 0, update 9, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 0, fail 9, block 0
Here the `{timeout: 10000}` is helpless as you have setup it above.