Apply the trustStore setting when ssl is true - Fixes #1782 (#2449)

Previously the truststore configuration option was applied only when StartTLS is called on a plain LDAP connection, however, the trust store is equally applicable to a full TLS connection (i.e. when ldap.ssl is set to true).

src/main/scala/gitbucket/core/util/LDAPUtil.scala

@@ -149,7 +149,7 @@ object LDAPUtil {
     keystore: String,
     error: String
   )(f: LDAPConnection => Either[String, A]): Either[String, A] = {
-    if (tls) {
+    if (tls || ssl) {
       // Dynamically set Sun as the security provider
       Security.addProvider(getSslProvider())