Certificate issue with RNetCDF version of NetCDF-C

[dblodgett-usgs]

There's a longish discussion over here attempting to figure out certificate issues on Windows. I think I'm running into the same thing with RNetCDF.

> RNetCDF::open.nc("https://cida.usgs.gov/thredds/dodsC/prism#log&show=fetch")
#> Note:Caching=1
#> Note:fetch: https://cida.usgs.gov/thredds/dodsC/prism.dds
#> Error:curl error: SSL peer certificate or SSH remote key was not OK
#> curl error details: 
#> Warning:oc_open: Could not read url
#> Note:fetch complete: 0.163 secs
#> Error in RNetCDF::open.nc("https://cida.usgs.gov/thredds/dodsC/prism#log&show=fetch") : 
#>   NetCDF: I/O failure

My Windows and Ubuntu system installs of NetCDF-C can access the offending OPenDAP resources just fine but I do have a rather unique cert chain due to our corporate IT requirements. I'll keep trying to chase this down, but figured I'd leave a note in case others are having trouble or have figured it out?