Meta server: allow to set set chunk server address by using chunk server socket peer's ip. This mode can be enabled by setting chunk server's host name to 0.0.0.0 by using chunkServer.hostname parameter. Add validation of chunk server location in the chunk server hello. Set chunk server's peer name in constructor and always use it (with all trace messages) instead of attempting to use network connection object's get peer name method, as the later will not return valid location if socket is no longer "good" / connected.
Chunk server: set chunk server's host to local host in the case when get peer name returns 0.0.0.0 and the meta server ip is set to local host to get past intermittent test failures on cygwin running in virtual machine.