Fix path and URL handling in ORA remote and associated tests

[mih]

This fixes datalad/datalad-ria#18 but it does not make the relevant test complete due to #5134. However, with these changes, I can manually create RIA siblings, push them, clone them, and get data from them -- on windows.

(base) C:\Users\mih\TMP>datalad create someds
[INFO] Creating a new annex repo at C:\Users\mih\TMP\someds
[INFO] Detected a filesystem without fifo support.
[INFO] Disabling ssh connection caching.
[INFO] Detected a crippled filesystem.
[INFO] Scanning for unlocked files (this may take some time)
[INFO] Entering an adjusted branch where files are unlocked as this filesystem does not support locked files.
[INFO] Switched to branch 'adjusted/master(unlocked)'
create(ok): C:\Users\mih\TMP\someds (dataset)

(base) C:\Users\mih\TMP>datalad -C someds create-sibling-ria -s store ria+file://C/Users/mih/TMP/RIA
[INFO] create siblings 'store' and 'store-storage' ...
[INFO] Fetching updates for Dataset("C:\Users\mih\TMP\someds")
[INFO] Configure additional publication dependency on "store-storage"
create-sibling-ria(ok): C:\Users\mih\TMP\someds (dataset)

(base) C:\Users\mih\TMP>echo 123 > someds\dummy.txt

(base) C:\Users\mih\TMP>datalad -C someds save
add(ok): dummy.txt (file)
save(ok): . (dataset)
action summary:
  add (ok: 1)
  save (ok: 1)

(base) C:\Users\mih\TMP>datalad -C someds push --to store
copy(ok): dummy.txt (file) [to store-storage...]
publish(ok): . (dataset) [refs/heads/master->store:refs/heads/master [new branch]]
publish(ok): . (dataset) [refs/heads/git-annex->store:refs/heads/git-annex [new branch]]

(base) C:\Users\mih\TMP>cat someds\.datalad\config
[datalad "dataset"]
        id = 7b95bb8c-750f-4e2e-8e91-a083af8b2b13

(base) C:\Users\mih\TMP>datalad clone ria+file:///C/Users/mih/TMP/RIA#7b95bb8c-750f-4e2e-8e91-a083af8b2b13 from_ria
[INFO] Detected a filesystem without fifo support.
[INFO] Disabling ssh connection caching.
[INFO] Detected a crippled filesystem.
[INFO] Scanning for unlocked files (this may take some time)
[INFO] Entering an adjusted branch where files are unlocked as this filesystem does not support locked files.
[INFO] Switched to branch 'adjusted/master(unlocked)'
[INFO] Remote origin cannot currently be accessed.
[INFO] Configure additional publication dependency on "store-storage"
configure-sibling(ok): . (sibling)
install(ok): C:\Users\mih\TMP\from_ria (dataset)
action summary:
  configure-sibling (ok: 1)
  install (ok: 1)

at this point it requires a manual intervention that should not be necessary (#5134).

(base) C:\Users\mih\TMP>git -C from_ria annex enableremote store-storage
enableremote store-storage ok
(recording state in git...)

but afterwards we are in business

(base) C:\Users\mih\TMP>datalad -C from_ria get dummy.txt
get(ok): dummy.txt (file) [from store-storage...]

(base) C:\Users\mih\TMP>cat from_ria\dummy.txt
123

[codecov]

Codecov Report

Merging #5136 (acf6779) into maint (ace8110) will decrease coverage by 29.24%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##            maint    datalad/datalad#5136       +/-   ##
===========================================
- Coverage   89.95%   60.71%   -29.25%     
===========================================
  Files         293      126      -167     
  Lines       40909    18907    -22002     
===========================================
- Hits        36800    11479    -25321     
- Misses       4109     7428     +3319     

Impacted Files	Coverage Δ
datalad/distributed/ora_remote.py	20.88% <0.00%> (-10.37%)	⬇️
datalad/plugin/addurls.py	17.32% <0.00%> (-82.39%)	⬇️
datalad/interface/rerun.py	14.52% <0.00%> (-82.10%)	⬇️
datalad/local/copy_file.py	15.08% <0.00%> (-78.88%)	⬇️
datalad/plugin/export_archive.py	24.65% <0.00%> (-75.35%)	⬇️
datalad/interface/add_archive_content.py	19.33% <0.00%> (-70.76%)	⬇️
datalad/metadata/search.py	19.50% <0.00%> (-69.19%)	⬇️
...ad/metadata/extractors/frictionless_datapackage.py	27.08% <0.00%> (-68.75%)	⬇️
datalad/metadata/extractors/datalad_rfc822.py	30.90% <0.00%> (-67.28%)	⬇️
datalad/plugin/add_readme.py	29.31% <0.00%> (-63.80%)	⬇️
... and 252 more

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[mih]

Thx @bpoldrack and @yarikoptic !