Bungee Plugin Metrics are using own threads and not BungeeCord scheduler.

[stephan-gh]

This should be avoided as SpigotMC/BungeeCord@5d1b660 points out.

java.security.AccessControlException: Plugin violation: Thread Creation: Use scheduler
    at net.md_5.bungee.BungeeSecurityManager.checkRestricted(BungeeSecurityManager.java:29)
    at net.md_5.bungee.BungeeSecurityManager.getThreadGroup(BungeeSecurityManager.java:50)
    at java.lang.Thread.init(Unknown Source)
    at java.lang.Thread.init(Unknown Source)
    at java.lang.Thread.<init>(Unknown Source)
    at java.util.TimerThread.<init>(Unknown Source)
    at java.util.Timer.<init>(Unknown Source)
    at java.util.Timer.<init>(Unknown Source)
    at net.minecrell.serverlistplus.bungee.metrics.BungeeMetrics.<init>(BungeeMetrics.java:60)
    at net.minecrell.serverlistplus.bungee.BungeePlugin.configChanged(BungeePlugin.java:225)
    at net.minecrell.serverlistplus.bungee.core.ConfigurationManager.reload(ConfigurationManager.java:128)
    at net.minecrell.serverlistplus.bungee.core.ServerListPlusCore.reload(ServerListPlusCore.java:154)
    at net.minecrell.serverlistplus.bungee.core.ServerListPlusCore.<init>(ServerListPlusCore.java:80)
    at net.minecrell.serverlistplus.bungee.BungeePlugin.onEnable(BungeePlugin.java:68)
    at net.md_5.bungee.api.plugin.PluginManager.enablePlugins(PluginManager.java:207)
    at net.md_5.bungee.BungeeCord.start(BungeeCord.java:223)
    at net.md_5.bungee.Bootstrap.main(Bootstrap.java:65)