if inputdata files are missing, try to download them. Add test.

[orichters]

Purpose of this PR

Current situation:

• sometimes, input download and distribution is incomplete, but REMIND doesn't notice (see Requeuing MAgPIE fails if it happens while distributing input files pik-piam/gms#75)
• sometimes, you add a filename to input/files and then you need to manually restart input generation

This PR:

• checks whether all input files are present as desired
• if missing, download and distribute input data. But don't do that while running --gamscompile to avoid that it tries to fix that over and over.
• add a test such that make test checks whether input data is complete
• suppress most input data update messages while running --gamscompile to avoid clutter in the terminal
• requires add 'path' param to getfiledestinations pik-piam/gms#88, new function missingInputData and some changes to start scripts to allow them being called from testthat directory
• The ECEMF config files passes the gamscompile test now, so need not be skipped anymore. Comment out all pseudo-comment scenarios to speed up the test

A failing test looks like that:

✖ | 1 2      0 | 01-inputdata [24.6s]
─────────────────────────────────────────────────
Warning (test_01-inputdata.R:5:5): Are all input data files present?
File olistest.csv seems to be missing!
Backtrace:
    ▆
 1. └─global updateInputData(cfg = gms::readDefaultConfig("../.."), remindPath = "../..") at test_01-inputdata.R:5:5
 2.   └─gms::download_distribute(...)
 3.     └─gms::copy_input(...) at gms/R/download_distribute.R:115:5

Warning (test_01-inputdata.R:9:5): Are all input data files present?
Missing input files: core/input/olistest.csv

Failure (test_01-inputdata.R:11:3): Are all input data files present?
length(missinginput) == 0 is not TRUE

`actual`:   FALSE
`expected`: TRUE

Type of change

• New feature
• No impact on scenarios

Checklist:

• I performed a self-review of my own code
• I explained my changes within the PR, particularly in hard-to-understand areas
• All automated model tests pass (FAIL 0 in the output of make test): [ FAIL 0 | WARN 0 | SKIP 6 | PASS 82 ]
• The changelog CHANGELOG.md has been updated correctly

[orichters]

tests still work: [ FAIL 0 | WARN 0 | SKIP 6 | PASS 82 ]

[LaviniaBaumstark]

make test is working including the new test, right?

[LaviniaBaumstark]

maybe delete those lines?

[orichters]

Well, as long as they are still called here, I think it is better just to comment them out:

remind/modules/31_fossil/timeDepGrades/preloop.gms

Line 56 in eb46563

$include "./modules/31_fossil/timeDepGrades/input/f31_decoffset.cs4r"

[LaviniaBaumstark]

but they do not exist...and if yomeone would provide them, they would not be dirstributed as long as they would be commented in in this file. So, I think, it is better to have no outcommented code. If this will be reactivated, there are anyway code adjsutments necessary.

[orichters]

make test is working including the new test, right?

yes.