lfs: default the User-Agent header for blob transfers to 'git-lfs'
The custom User-Agent for blob transfers was added in
e7bb5fc4570c. Now I've
hit another incompatibility with a server wanting the string to start with
'git' or 'git-lfs' [1]. I don't feel strongly about this either way, but a
Wireshark trace of git shows that when the Batch API is hit, the User-Agent is
'git-lfs/2.3.4'. So this would probably ensure maximum interoperability.
This still leaves the experimental knob in, just in case.
[1] https://bitbucket.org/sdorra/scm-manager/src/
095a027178888bc2b819aebfae3d2c192c858030/scm-plugins/scm-git-plugin/src/main/java/sonia/scm/web/GitUserAgentProvider.java?at=default&fileviewer=file-view-default#GitUserAgentProvider.java-117
(binary:application/octet-stream)