Grant group member to has write access on the secret key store path

The httpd subprocess is running by apache user who is under apache
group, we need save the secret key store file into a path which apache
user has write access.

Close-bug: #1267691

Change-Id: Ia7effc95d62404c2b2901273909d69871c2d6899
Merge "Grant group member to has write access on the secret key store path"