test flake in e2e TestConsulRegistration

[tgross]

A run of the nightly e2e tests failed overnight. Re-running it passed so the test appears to be possibly flaky. This test is still using gomega so it has this giant messy stack trace, but it looks like not all instances of the redis task got registered with Consul before the timeout.

  === RUN   TestE2E/Consul/*consul.ConsulE2ETest/TestConsulRegistration
      TestE2E/Consul/*consul.ConsulE2ETest/TestConsulRegistration: testing_t_support.go:22:
          	~/go/src/github.com/hashicorp/nomad/vendor/github.com/onsi/gomega/internal/asyncassertion/async_assertion.go:147 +0x3e9
          github.com/hashicorp/nomad/vendor/github.com/onsi/gomega/internal/asyncassertion.(*AsyncAssertion).Should(0xc00020b180, 0x168ecc0, 0xc00000f980, 0x0, 0x0, 0x0, 0x1684aa0)
          	~/go/src/github.com/hashicorp/nomad/vendor/github.com/onsi/gomega/internal/asyncassertion/async_assertion.go:48 +0x62
          github.com/hashicorp/nomad/e2e/consul.(*ConsulE2ETest).TestConsulRegistration(0xc00000e3e0, 0xc000203080)
          	~/go/src/github.com/hashicorp/nomad/e2e/consul/consul.go:75 +0x517
          reflect.Value.call(0xc00007a2a0, 0xc000206088, 0x13, 0x13a2429, 0x4, 0xc000077f20, 0x2, 0x2, 0xc000077e80, 0x40c1ca, ...)
          	/opt/goenv/versions/1.14.0/src/reflect/value.go:460 +0x8ab
          reflect.Value.Call(0xc00007a2a0, 0xc000206088, 0x13, 0xc000077f20, 0x2, 0x2, 0x1828b60, 0x1828bc0, 0xf)
          	/opt/goenv/versions/1.14.0/src/reflect/value.go:321 +0xb4
          github.com/hashicorp/nomad/e2e/framework.(*Framework).runCase.func1.2(0xc0003b47e0)
          	~/go/src/github.com/hashicorp/nomad/e2e/framework/framework.go:306 +0x25a
          testing.tRunner(0xc0003b47e0, 0xc00024e0e0)
          	/opt/goenv/versions/1.14.0/src/testing/testing.go:992 +0xdc
          created by testing.(*T).Run
          	/opt/goenv/versions/1.14.0/src/testing/testing.go:1043 +0x357

          Timed out after 5.000s.
          Expected
              <[]consul.serviceNameTagPair | len:1, cap:1>: [
                  {
                      serviceName: "redis-cache",
                      tags: {"global": {}, "cache": {}},
                  },
              ]
          to consist of
              <[]interface {} | len:1, cap:1>: [
                  [
                      {
                          serviceName: "redis-cache",
                          tags: {"global": {}, "cache": {}},
                      },
                      {
                          serviceName: "redis-cache",
                          tags: {"global": {}, "cache": {}},
                      },
                      {
                          serviceName: "redis-cache",
                          tags: {"global": {}, "cache": {}},
                      },
                  ],
              ]

[github-actions]

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