wrong single level (ua_850, etc) interpolated filenames

[gleckler1]

@doutriaux1
Will need CD to repair this as pcmdi_metrics.io.base.Base in driver is too terse for PG to follow. The problem is single sliced layers (ua_850, ta_200, zg_500, ...) have a duplicate (but x100, in pa rather than hPa) description in the filename. The correction for the file below is to remove the "20000-" in the filename.

cmip5.MPIESM-MR.historical.r1i1p1.mo.Amon.ta_**20000-**200.ver1.1979-1989.interpolated.linear.2.5x2.5.global.AC.nc

[gleckler1]

@doutriaux1 note how the level info is dealt with in filename (e.g. "ta_850") should be consistent between output clims and json files

[gleckler1]

@doutriaux1 ok, regional domains may take a little work, but this one should be quick/easy... but not for me!

[doutriaux1]

@gleckler1 we need to talk this was intended I think the first one is the actual value retrieved and the second one is the value in param files. So you want to merge them into:
cmip5.MPIESM-MR.historical.r1i1p1.mo.Amon.ta-200.ver1.1979-1989.interpolated.linear.2.5x2.5.global.AC.nc ?

[gleckler1]

@doutriaux1 oui!