require whisk auth fix

[steven0711dong]

No description provided.

[rabbah]

I apologize no one reviewed this sooner. I added a comment about generating alphanumeric secrets instead of integer only. Also this needs either some go unit tests or integration (scala) tests.

[rabbah]

I'd replace this with the ability to generate an alphanumeric secret instead.
Something like:

rand.Seed(time.Now().UnixNano())
var alphabet = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
b := make([]rune, SECRET_LENGTH)
for i := range b {
   b[i] = alphabet[rand.Intn(len(alphabet))]
}
return string(b)