Change error text to encourage better issue reports

[tstromberg]

This sounds less catastrophic.

[k8s-ci-robot]

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[codecov-io]

Codecov Report

Merging #6121 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #6121   +/-   ##
=======================================
  Coverage   36.68%   36.68%           
=======================================
  Files         113      113           
  Lines        8360     8360           
=======================================
  Hits         3067     3067           
  Misses       4892     4892           
  Partials      401      401

[tstromberg]

/ok-to-test

[minikube-bot]

All Times minikube: [ 124.345436 125.324573 111.146279]
All Times Minikube (PR 6121): [ 124.606199 122.142400 123.974323]

Average minikube: 120.272096
Average Minikube (PR 6121): 123.574307

Averages Time Per Log

+----------------------+-----------+--------------------+
|         LOG          | MINIKUBE  | MINIKUBE (PR 6121) |
+----------------------+-----------+--------------------+
| minikube v           |  0.249767 |           0.249413 |
| Creating kvm2        | 46.790845 |          46.744808 |
| Preparing Kubernetes | 47.775921 |          51.330547 |
| Pulling images       |  2.718018 |           2.641010 |
| Launching Kubernetes | 20.128808 |          20.005002 |
| Waiting for cluster  |  2.562157 |           2.557992 |
+----------------------+-----------+--------------------+

[minikube-bot]

All Times minikube: [ 122.723092 125.061308 108.911473]
All Times Minikube (PR 6121): [ 124.754156 122.459180 122.940879]

Average minikube: 118.898624
Average Minikube (PR 6121): 123.384739

Averages Time Per Log

+----------------------+-----------+--------------------+
|         LOG          | MINIKUBE  | MINIKUBE (PR 6121) |
+----------------------+-----------+--------------------+
| minikube v           |  0.320449 |           0.317825 |
| Creating kvm2        | 45.493522 |          46.199230 |
| Preparing Kubernetes | 47.936147 |          50.721990 |
| Pulling images       |  2.751665 |           2.832504 |
| Launching Kubernetes | 19.449902 |          20.357725 |
| Waiting for cluster  |  2.902185 |           2.911617 |
+----------------------+-----------+--------------------+

[priyawadhwa]

lgtm, I think this just needs to be rebased for travis to pass