Modify noahmpdrv for global distributed urban parameters

[epn09]

Add global distributed urban parameters to the driver.

[cenlinhe]

I will come back to this PR later for more detailed review

[tslin2]

It read three parameters which looks okay to me.

[cenlinhe]

This PR is for WRFv4.6 urban updates: wrf-model/WRF#1881
For Noah-MP v5 updates with this, I will do it later in a similar but more elegant way after coupling WRF with Noah-MP v5

[CharlesZheZhang]

These changes look good to me

[cenlinhe]

These changes (adding 3 new variables as urban inputs) look good to me.

[tslin2]

The code add three variables into SLUCM model,

lf_urb2d_s
z0_urb2d
vegfra

The changes look okay here, but it may require further test in coupling with WRF

[cenlinhe]

This update will currently not work with HRLDAS/Noah-MP-urban coupling, since we have not included these new inputs for the HRLDAS/Noah-MP-urban interface for the non-refactored code. We will do this for the version 5 in the near future along with the coupling of Noah-MP v5 with WRF.