Fix unit tests for Mac and AppleTV

* Fixed test22c_SetCookieInHeader to always run with SSL (on Mac, it runs on non SSL previously).

* Added NSAppTransportSecurity to Apple TV Test’s info.plist to be able to run P2P tests and Replicator with SSL tests.

Test-tvOS/tvosDemo-Info.plist

@@ -28,5 +28,20 @@
 	<array>
 		<string>arm64</string>
 	</array>
+    <key>NSAppTransportSecurity</key>
+    <dict>
+        <key>NSAllowsArbitraryLoads</key>
+        <true/>
+        <key>NSExceptionDomains</key>
+        <dict>
+            <key>local</key>
+            <dict>
+                <key>NSExceptionRequiresForwardSecrecy</key>
+                <false/>
+                <key>NSIncludesSubdomains</key>
+                <true/>
+            </dict>
+        </dict>
+    </dict>
 </dict>
 </plist>

Unit-Tests/Replication_Tests.m

@@ -1542,10 +1542,13 @@ - (void) test22b_SyncGatewaySessionCookie {
 
 - (void) test22c_SetCookieInHeader {
     // https://github.com/couchbase/couchbase-lite-ios/issues/1757
-    NSURL* remoteURL = [self remoteTestDBURL: @"cbl_auth_test"];
+    NSURL* remoteURL = [self remoteSSLTestDBURL: @"cbl_auth_test"];
     if (!remoteURL)
         return;
 
+    NSArray* serverCerts = [self remoteTestDBAnchorCerts];
+    [CBLReplication setAnchorCerts: serverCerts onlyThese: NO];
+
     for (NSInteger i = 0; i < 2; i ++) {
         NSDictionary* cookie =
             [self generateSyncGatewayCookieForURL: remoteURL ttl: @(5)];