Remove/revise tests relying on peer_name SSL context option

This option is not supported by libmongoc's SSL implementation.

The test for PHPC-720 can be modified to allow invalid host names.

Author: jmikola

tests/connect/bug0720.phpt

@@ -9,11 +9,9 @@ require_once __DIR__ . "/../utils/basic.inc";
 $SSL_DIR = realpath(__DIR__ . '/../../scripts/ssl/');
 
 $driverOptions = [
-    'peer_name' => 'server',
-    'verify_peer' => true,
-    'verify_peer_name' => true,
-    'allow_self_signed' => false,
-    'cafile' => $SSL_DIR . '/ca.pem', /* Defaults to openssl.cafile */
+    // libmongoc does not allow the hostname to be overridden as "server"
+    'allow_invalid_hostname' => true,
+    'ca_file' => $SSL_DIR . '/ca.pem',
 ];
 
 $manager = new MongoDB\Driver\Manager(STANDALONE_SSL, ['ssl' => true], $driverOptions);