LDAP is configured via the following environment variables:

```
$ mc admin config set myminio identity_ldap --env
KEY:
identity_ldap  enable LDAP SSO support

ARGS:
MINIO_IDENTITY_LDAP_SERVER_ADDR*            (address)   AD/LDAP server address e.g. "myldap.com" or "myldapserver.com:636"

func (s *TestSuiteIAM) SetUpLDAP(c *check, serverAddr string) {
	ctx, cancel := context.WithTimeout(context.Background(), testDefaultTimeout)
	defer cancel()

	configCmds := []string{
		"identity_ldap",
		fmt.Sprintf("server_addr=%s", serverAddr),
		"server_insecure=on",
		"lookup_bind_dn=cn=admin,dc=min,dc=io",
		"lookup_bind_password=admin",
		"user_dn_search_base_dn=dc=min,dc=io",