Revert "fix: rename nickname to nickName to conform SCIM API"
Revert "fix: rename nickname to nickName to conform SCIM API"

This reverts commit 29091f462c866ca1cb8ecb09d75f9274b6597d4e.

GluuFederation/community-edition-setup,GluuFederation/community-edition-setup,GluuFederation/community-edition-setup