Tests are skipped on Mac OS

[thepeterstone]

Is this an Issue/Bug or a Feature Request?

[x] Issue or Bug
[ ] Feature Request

What is this issue about? Or why do you want this feature?

There multiple places in the test suite where we make a runtime check and skip the test on Mac OS. This works around some flaky test behavior but lowers the utility of the suite and leads to build breaks due to false negatives.

1. src/internal/acceptance/metric-store/metric_store_test.go#L521
2. src/internal/acceptance/metric-store/metric_store_test.go#L538
3. src/internal/acceptance/metric-store/metric_store_test.go#L560
4. src/performance/performance_test.go#L30
5. src/pkg/leanstreams/leanstreams_test.go#L229
6. src/pkg/leanstreams/leanstreams_test.go#L254
7. src/pkg/ingressclient/ingressclient_test.go#L61

What version of Metric Store are you using?

develop

Please provide output that helps describe the issue:

For example, the ingressclient:

IngressClient
  errors if writing fails
  /Users/pstone/workspace/metric-store-release/src/pkg/ingressclient/ingressclient_test.go:59

S [SKIPPING] [0.004 seconds]
IngressClient
/Users/pstone/workspace/metric-store-release/src/pkg/ingressclient/ingressclient_test.go:18
  errors if writing fails [It]
  /Users/pstone/workspace/metric-store-release/src/pkg/ingressclient/ingressclient_test.go:59

  doesn't work on Mac OS

  /Users/pstone/workspace/metric-store-release/src/pkg/ingressclient/ingressclient_test.go:61

Is there anything unique or special about your setup?

Running scripts/test on a Mac.

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this. Unfortunately, the Pivotal Tracker project is private so you may be unable to view the contents of the story.

The labels on this github issue will be updated when the story is started.