Given 1.9 has issues we're aware of, for now we're locking to 1.8.
Closes gitlab-org/gitaly#1059 and will probably be removed if 1.10 is
tested an deemed ok.

Closes gitaly#1046

36847 - add changelog

26039 - add merge request id


26039 change due to lingust source file updates

Closes gitaly#985

Gem is updated from 2.8 to 2.10. [changelog][1]

[1]: https://github.com/seattlerb/flay/blob/master/History.rdoc

Implements the client side for gitlab-org/gitaly#819. Which is a server
info command. This checks the server version and git binairy version on
the server.

A small UI was added for administrators, so they can check the status of
the Gitaly server. This is done for each storage the monolith knows.

Because of this commit, gitlab-org/gitlab-ce!15580 is now closed. That
MR removed the Git version too, but didn't replace it with anything.

Closes gitaly#979

Closes gitaly#967

Signed-off-by: Rémy Coutable <remy@rymai.me>

Closes gitaly#958

for parser which is emitting:

```
warning: parser/current is loading parser/ruby23, which recognizes
warning: 2.3.5-compliant syntax, but you are running 2.3.6.
warning: please see https://github.com/whitequark/parser#compatibility-with-ruby-mri.
```

There's no easy way to disable this, and we're already using the
latest version. This should be harmless anyway.

Closes gitaly#946

Closes gitaly#929

Signed-off-by: Rémy Coutable <remy@rymai.me>

See https://github.com/rails/rails/pull/24658#issuecomment-212651965

Closes gitaly#907

Closes gitaly#903

This removes all usage of soft removals except for the "pending delete"
system implemented for projects. This in turn simplifies all the query
plans of the models that used soft removals. Since we don't really use
soft removals for anything useful there's no point in keeping it around.

This _does_ mean that hard removals of issues (which only admins can do
if I'm not mistaken) can influence the "iid" values, but that code is
broken to begin with. More on this (and how to fix it) can be found in
https://gitlab.com/gitlab-org/gitlab-ce/issues/31114.

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/37447

Closes gitaly#825

Signed-off-by: Rémy Coutable <remy@rymai.me>

Uses `list_commits_by_oid` on the CommitService, to request the needed
commits for pipelines. These commits are needed to display the user that
created the commit and the commit title.

This includes fixes for tests failing that depended on the commit
being `nil`. However, now these are batch loaded, this doesn't happen
anymore and the commits are an instance of BatchLoader.