PowerConnect,M6220S,M6220,V4.2.1.3,A29

This is a maintenance release so only bug fixes are included.

Fixes:
- The "show fiber optical-transceiver" command shows LOS even though link is up.
- Unable to ping with jumbo frames set.
- cpCaptivePortalWebLangCode.1.1 displays en when mib says only supported value active (1).
- LLDP Assignment of port ID for Port-Description TLV
- The CLI shows incorrect media type 10GBASE-T for fiber ports
- Can't assign a name to a VLAN.
- No default route or static showing in ip route table.
- CLI command "show dot1x users" is missing
- Missing port membership from SNMP (dot1qVlanStaticUntaggedPorts and dot1qVlanStaticEgressPorts)
- The VRPP track port priority changes in the running config.
- Firmware won't allow domain names with hyphen "-" in logging email.
- Internal ports are up during most of the switch POST.
- Continuous log message at default settings.
- DNS client error.
- VRRP Intermittent Connectivity Issues.
- VLAN membership port names not consistent in GUI.
- Sometimes switch crashes when receiving of Radius packets.
- In a Stack, the "show system temperature" CLI command breaks CLI
- QOS on port channel.
- Dropped VLAN frames are included in Discards counters.
- PC7048 Combo ports are not passing traffic.
- Order of switchport commands in running-config changed.