If user passes member id as unicode characters in member create then
HTTP 500 internal server error is raised.
Reason: The unicode format check is not performed in db create member.
This patch fixes the member create by checking member id before
inserting in db. If member id is unicode then proper exception
is raised and same is handled in controller api.
Change-Id: I67be5e990d1269cbb986db7fff21a90a41af06e4
Closes-Bug: #1688189