chore(ci): add ci workflow for arm64

[joshua-goldstein]

Problem

We would like to support arm64. Toward that end we want to add a ci job that will run tests on an arm instance. This is a WIP because some tests are failing (see remarks below)

Solution

• Get the latest Ristretto and Badger versions that fixed certain arm64 issues. This is also in a PR fix(deps): update dependencies on badger + ristretto #8365 that has not been merged yet.

go get github.com/dgraph-io/[email protected]
go get github.com/dgraph-io/badger/[email protected]
go mod tidy 

• Remove GOOS/GOARCH constraints in Makefile and CI workflow.

Current test failures

These are all of the places we currently see failures. Unfortunately the skip flag in t.go is unable to skip these particular tests in graphql. All other tests are passing.

graphql/e2e/normal
graphql/e2e/directives
graphql/e2e/custom_logic
systest/export

Remarks

I was experimenting with a fresh arm64 instance and running tests on there (same or very similar environment to CI environment). These look like nontrivial failures that need to be investigated.

I have a script that does all the setup (Go, Docker, etc.) in a similar way to the CI environment but for arm (see here).

Todo

Set up Github actions to run these jobs on an arm instance automatically, once we have a baseline.

[joshua-goldstein]

Thanks @adityasadalage for also taking a look at this, I was debating whether to reopen your PR and make these changes there but it seemed like a lot to push. If you see anything here that can be modified please feel free to edit as necessary.

[CLAassistant]

All committers have signed the CLA.

[skrdgraph]

small check is needed here - is this an and or or?

[joshua-goldstein]

AND, confirmed here..

[skrdgraph]

+1 ^ thanks!

[coveralls]

Coverage remained the same at 37.18% when pulling cee8b32 on joshua/add-arm64-ci-job into 855974e on main.