I understand this is a recent update to MacOS but just wanted get this on the roadmap if it hasn't been tackled already. Thanks :)

## Environments
__OS:__  OSX
__Selenium Version:__  Selenium server standalone <= 3.14.0
__Browser:__  Any
__Browser Version:__ Any

## Expected Behavior
Selenium Grid hub routes webdriver traffic to specified `platform[Name]: macos 10.14` or `mojave`

## Actual Behavior
No current support for node platform target MacOS 10.14 Mojave.
Desired capabilities `platform[Name]` set to `macos 10.14` or `mojave` fails to find corresponding selenium node.
__Workaround:__
Disable all other MacOS platform nodes and target `platform[Name]: "MAC"`

## Steps to reproduce -
Create a selenium grid with OSX 10.12/13 and 10.14.
Run tests with desired capabilities `platform[Name]: "mojave"`.

## Reference
Known and Supported Platforms that WebDriver runs on: 
https://github.com/SeleniumHQ/selenium/blob/master/java/client/src/org/openqa/selenium/Platform.java
Doesn't include identifier for MacOSX 10.14 Mojave
if (os.isCurrentPlatform(osName, matcher) && isBetterMatch(previousMatch, matcher)) {
          previousMatch = matcher;
          mostLikely = os;
        }
      }
    }
    
    return mostLikely;
  }
  /**
   * Gets a platform with the name matching the parameter.
   *
   * @param name the platform name
   * @return the Platform enum value matching the parameter
   */
  public static Platform fromString(String name) {
    for (Platform platform : values()) {
      if (platform.toString().equalsIgnoreCase(name)) {
        return platform;
      }
    }
    for (Platform os : Platform.values()) {
      for (String matcher : os.partOfOsName) {
        if (name.toLowerCase().equals(matcher.toLowerCase())) {
          return os;
        }
      }
    }
    throw new WebDriverException("Unrecognized platform: " + name);
  }