Setup e2e test for Stride pool migration (backport #4393)

[mergify]

This is an automatic backport of pull request #4393 done by Mergify.
Cherry-pick of b3cd00c has failed:

On branch mergify/bp/v14.x/pr-4393
Your branch is up to date with 'origin/v14.x'.

You are currently cherry-picking commit b3cd00c0.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   tests/e2e/e2e_test.go
	modified:   x/gamm/keeper/multihop.go

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   proto/osmosis/poolmanager/v1beta1/genesis.proto
	deleted by us:   proto/osmosis/poolmanager/v1beta1/module_route.proto
	both modified:   tests/e2e/initialization/config.go
	deleted by us:   x/poolmanager/create_pool.go
	deleted by us:   x/poolmanager/create_pool_test.go
	deleted by us:   x/poolmanager/export_test.go
	deleted by us:   x/poolmanager/keeper.go
	deleted by us:   x/poolmanager/keeper_test.go
	deleted by us:   x/poolmanager/types/genesis.pb.go
	deleted by us:   x/poolmanager/types/keys.go
	deleted by us:   x/poolmanager/types/module_route.pb.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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