Data race in CacheController

[DavidNix]

❯ stress ./cosmos.test
5s: 773 runs so far, 0 failures
10s: 1584 runs so far, 0 failures
15s: 2394 runs so far, 0 failures
20s: 3170 runs so far, 0 failures
25s: 3949 runs so far, 0 failures
30s: 4720 runs so far, 0 failures
35s: 5502 runs so far, 0 failures
40s: 6272 runs so far, 0 failures
45s: 7073 runs so far, 0 failures
50s: 7855 runs so far, 0 failures

/var/folders/gv/8y8kgtw10_37gt24l8br4nvc0000gn/T/go-stress-20230702T095941-2040175276
==================
WARNING: DATA RACE
Read at 0x00c0003cc518 by goroutine 69:
  github.com/strangelove-ventures/cosmos-operator/internal/cosmos.(*mockReader).List()
      /Users/davidnix/src/strangelove/cosmos-operator/internal/cosmos/cache_controller_test.go:65 +0x108
  github.com/strangelove-ventures/cosmos-operator/internal/cosmos.(*CacheController).listPods()
      /Users/davidnix/src/strangelove/cosmos-operator/internal/cosmos/cache_controller.go:173 +0x1f0
  github.com/strangelove-ventures/cosmos-operator/internal/cosmos.(*CacheController).collectFromPods.func1()
      /Users/davidnix/src/strangelove/cosmos-operator/internal/cosmos/cache_controller.go:186 +0x70
  github.com/strangelove-ventures/cosmos-operator/internal/cosmos.(*CacheController).collectFromPods()
      /Users/davidnix/src/strangelove/cosmos-operator/internal/cosmos/cache_controller.go:196 +0x130
  github.com/strangelove-ventures/cosmos-operator/internal/cosmos.(*CacheController).Reconcile.func1()
      /Users/davidnix/src/strangelove/cosmos-operator/internal/cosmos/cache_controller.go:144 +0xc4
  golang.org/x/sync/errgroup.(*Group).Go.func1()
      /Users/davidnix/go/pkg/mod/golang.org/x/[email protected]/errgroup/errgroup.go:75 +0x6c

Previous write at 0x00c0003cc518 by goroutine 68:
  github.com/strangelove-ventures/cosmos-operator/internal/cosmos.TestCacheController_Reconcile.func2()
      /Users/davidnix/src/strangelove/cosmos-operator/internal/cosmos/cache_controller_test.go:159 +0x648
  testing.tRunner()
      /Users/davidnix/.local/share/rtx/installs/golang/1.20.4/go/src/testing/testing.go:1576 +0x188
  testing.(*T).Run.func1()
      /Users/davidnix/.local/share/rtx/installs/golang/1.20.4/go/src/testing/testing.go:1629 +0x40

Goroutine 69 (running) created at:
  golang.org/x/sync/errgroup.(*Group).Go()
      /Users/davidnix/go/pkg/mod/golang.org/x/[email protected]/errgroup/errgroup.go:72 +0x10c
  github.com/strangelove-ventures/cosmos-operator/internal/cosmos.(*CacheController).Reconcile()
      /Users/davidnix/src/strangelove/cosmos-operator/in
…
55s: 8660 runs so far, 1 failures (0.01%)
1m0s: 9451 runs so far, 1 failures (0.01%)
1m5s: 10234 runs so far, 1 failures (0.01%)
1m10s: 11016 runs so far, 1 failures (0.01%)
1m15s: 11813 runs so far, 1 failures (0.01%)
1m20s: 12613 runs so far, 1 failures (0.01%)
1m25s: 13401 runs so far, 1 failures (0.01%)
1m30s: 14182 runs so far, 1 failures (0.01%)
1m35s: 14962 runs so far, 1 failures (0.01%)
1m40s: 15753 runs so far, 1 failures (0.01%)
1m45s: 16551 runs so far, 1 failures (0.01%)
1m50s: 17321 runs so far, 1 failures (0.01%)
1m55s: 18119 runs so far, 1 failures (0.01%)
2m0s: 18903 runs so far, 1 failures (0.01%)