OvsdbConnectionService background thread (from netty?) should be daemon (and have a proper thread name)

"Thread-39" #283 prio=5 os_prio=0 tid=0x00007fbd6c028780 nid=0x3d79 in Object.wait() [0x00007fbd45884000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	at java.lang.Object.wait(Object.java:502)
	at io.netty.util.concurrent.DefaultPromise.await(DefaultPromise.java:232)
	- locked <0x000000008a617300> (a io.netty.channel.AbstractChannel$CloseFuture)
	at io.netty.channel.DefaultChannelPromise.await(DefaultChannelPromise.java:129)
	at io.netty.channel.DefaultChannelPromise.await(DefaultChannelPromise.java:28)
	at io.netty.util.concurrent.DefaultPromise.sync(DefaultPromise.java:333)
	at io.netty.channel.DefaultChannelPromise.sync(DefaultChannelPromise.java:117)
	at io.netty.channel.DefaultChannelPromise.sync(DefaultChannelPromise.java:28)
	at org.opendaylight.ovsdb.lib.impl.OvsdbConnectionService.ovsdbManagerWithSsl(OvsdbConnectionService.java:362)
	at org.opendaylight.ovsdb.lib.impl.OvsdbConnectionService.ovsdbManager(OvsdbConnectionService.java:300)
	at org.opendaylight.ovsdb.lib.impl.OvsdbConnectionService.lambda$startOvsdbManager$1(OvsdbConnectionService.java:249)
	at org.opendaylight.ovsdb.lib.impl.OvsdbConnectionService$$Lambda$1133/1995495413.run(Unknown Source)
	at java.lang.Thread.run(Thread.java:748)