Add needed land variables to the da_state stream

[guoqing-noaa]

The cycling DA uses the mpasout file to warm start new forecasts. It uses the da_state stream, which misses the following variables:

<var name="isltyp"/>                                                                                                                                                   
<var name="soilf"/>
<var name="ivgtyp"/>
<var name="landusef"/>
<var name="mminlu"/>
<var name="isice_lu"/>
<var name="iswater_lu"/>
<var name="landmask"/>
<var name="shdmin"/>
<var name="shdmax"/>
<var name="snoalb"/>
<var name="albedo12m"/>
<var name="greenfrac"/>
<var name="lai12m"/>