Make SSH2 host-key test algorithm-independent

SSH servers may negotiate any supported host-key algorithm based on their configuration and libssh2's capabilities. Requiring Ed25519 made the regression fail against otherwise valid CI fixtures using a different host key.\n\nAssert that libssh2 recognized the negotiated type instead. The test continues to verify the raw key payload and its exact SHA-256 fingerprint equivalence without coupling itself to one server configuration.

Author: binaryfire

tests/swoole_ssh2/ssh2_hostkey.phpt

@@ -15,7 +15,7 @@ Co\run(function () {
     var_dump(is_string($hostKey['key']));
     var_dump($hostKey['key'] !== '');
     var_dump(is_int($hostKey['type']));
-    var_dump($hostKey['type'] === SSH2_HOSTKEY_TYPE_ED25519);
+    var_dump($hostKey['type'] !== SSH2_HOSTKEY_TYPE_UNKNOWN);
     var_dump(strlen($fingerprint));
     var_dump($fingerprint === hash('sha256', $hostKey['key'], true));