add a way to set or clean server parameters

[svycka]

public function loginWithCredentials(string $usernameOrEmail, string $password)
{
    $I = $this;
    ​
    $I->amHttpAuthenticated('android', '');
    $I->sendPOST('/oauth2/token', [
        'username' => $usernameOrEmail,
        'password' => $password,
        'grant_type' => 'password',
    ]);
    $accessToken = $I->grabDataFromResponseByJsonPath('$.access_token');
    // I would like to remove HTTP auth here but there is no way how to do it now
    // but now I will be able to reset server params with $I->setServerParameters([]);
    $I->amBearerAuthenticated($accessToken[0]);
    $I->sendPOST('/user-profile');
}