Reject record ids with unsupported characters at the end
Related issue #213.
For Storage create/update record API, if a record ID ends with a dot (.), a forward slash (/), or a backslash (\) the data block for the record is not properly uploaded to the Microsoft storage account. Create/update record API should reject record IDs that end in these unsupported characters (i.e. return 400 bad request when such record IDs are used).