mail: allow aliases to have wildcard

this came out of https://forum.cloudron.io/topic/6350/disposable-email-prefixes-for-existing-mailboxes/

src/test/mail-test.js

@@ -183,6 +183,19 @@ describe('Mail', function () {
             expect(results[1].domain).to.be(domain.domain);
         });
 
+        it('can set wildcard alias', async function () {
+            await mail.setAliases('support', domain.domain, [ { name: 'support*', domain: domain.domain }, { name: 'help', domain: domain.domain } ], auditSource);
+        });
+
+        it('can get aliases of name', async function () {
+            const results = await mail.getAliases('support', domain.domain);
+            expect(results.length).to.be(2);
+            expect(results[0].name).to.be('help');
+            expect(results[0].domain).to.be(domain.domain);
+            expect(results[1].name).to.be('support*');
+            expect(results[1].domain).to.be(domain.domain);
+        });
+
         it('unset aliases', async function () {
             await mail.setAliases('support', domain.domain, [], auditSource);