always return array

[simonLeary42]

#13

[simonLeary42]

confirmed that web portal doesn't need any changes:

resources/lib/UnityGroup.php
419:            $members = $pi_group->getAttribute("memberuid");
450:        $members = $pi_group->getAttribute("memberuid");
resources/lib/UnityLDAP.php
242:            $params = array($user->getAttribute("cn")[0], $this, $UnitySQL, $UnityMailer, $UnityRedis, $UnityWebhook);
269:                $pi_group->getAttribute("cn")[0],
300:                $org_group->getAttribute("cn")[0],
resources/lib/UnityOrg.php
61:        $members = $org_group->getAttribute("memberuid");
77:            $members = $org_group->getAttribute("memberuid");
resources/lib/UnityUser.php
187:            $org = $this->getLDAPUser()->getAttribute("o")[0];
193:            return $this->getLDAPUser()->getAttribute("o")[0];
236:            $firstname = $this->getLDAPUser()->getAttribute("givenname")[0];
285:            $lastname = $this->getLDAPUser()->getAttribute("sn")[0];
339:            $mail = $this->getLDAPUser()->getAttribute("mail")[0];
403:            $result = $ldapUser->getAttribute("sshpublickey");
480:            $loginshell = $ldapUser->getAttribute("loginshell")[0];
528:            $homedir = $ldapUser->getAttribute("homedirectory");
547:        $admins = $this->LDAP->getAdminGroup()->getAttribute("memberuid");

getAttribute("homedirectory") is wrong but I think it's always been wrong and that method is not used anywhere: UnityHPC/unity-web-portal#178