Default IONEX Server change

[shulevski]

Several months ago the LINC code was changed and the default server to get the needed ionospheric state files is now: ftp://gssc.esa.int/gnss/products/ionex/ with the prefix UQRG. The create_ms_list.py script should reflect this change, otherwise if a user runs the LINC pipeline specifying the old default, it may error out in target runs at the RMExtract step for data taken in the last 1-2 years...

See: https://git.astron.nl/RD/LINC/-/issues/52

[tikk3r]

Thanks for reporting. Does that default work for every observation or do we need a switch for younger than 1-2 years ago and older than that?

[shulevski]

I think they should work for all data sets. Hopefully the LINC developers know what they are doing ;) Most likely the old server stopped and the new one contains info on previous years as well.

[tikk3r]

Updated with #93 .