## Changes
<!-- Summary of your changes that are easy to understand -->
1. Add pattern to always ignore .databricks
2. Best effort creation of .gitignore with .databricks if it's needed
## Tests
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This commit changes the code in repository.go to lazily load gitignore
files as opposed to the previous eager approach. This means that the
signature of the `Ignore` function family has changed to return `(bool,
error)`.
This lazy approach fits better when other code is responsible for
recursively walking the file tree, because we never know up front which
gitignore files need to be loaded to compute the ignores. It also means
we no longer have to "prime" the `Repository` instance with a particular
directory we're interested in and rather let calls to `Ignore` load
whatever is needed.
The fileset wrapper under `git/` internally taints all gitignore objects
to force a call to [os.Stat] followed by a reload if they have changed,
before calling into the [fileset.FileSet] functions for recursively
listing files.
Unit tests are now run in all three big OS.
Some of the changes are to make the tests green for windows while we are
skipping some of the other tests on windows/macOS to make the tests
pass. This is a temporary measure and we will incrementally migrate
these tests over so there is parity in unit testing along all three
environments!
This PR does multiple things, which are:
1. Creates .databricks dir according to outcomes concluded in "bricks
configuration principles"
2. Puts the sync snapshots into a file whose names is tagged with
md5(concat(host, remote-path))
3. Saves both host and username in the bricks snapshot for debuggability
Tested manually:
https://user-images.githubusercontent.com/88374338/195672267-9dd90230-570f-49b7-847f-05a5a6fd8986.mov
shreyas-goenka
Pieter Noordhuis
Shreyas Goenka