The name for the DB security group. This value is stored as a lowercase string. Constraints: 
- Must be 1 to 255 alphanumeric characters
- First character must be a letter
- Cannot end with a hyphen or contain two consecutive hyphens
- Must not be "Default"
- May not contain spaces
 Declaration Syntax
 Declaration Syntax| C# | 
public string DBSecurityGroupName { get; set; }