Fix local cluster scripts
Change a spammy log to V(3)
Fixes #1612 kubelet should fail to start if it cannot create rootDir
Merge pull request #2132 from erikstmartin/kubelet-rootdir-fix

Fixes #1612 kubelet should fail to start if it cannot create rootDir
Merge pull request #2135 from brendandburns/cleanup

Change a spammy log to V(3)
Merge pull request #2129 from ddysher/fix-local-up

Fix local cluster scripts
Stop running benchmarks for every travis run.  They're flaky.
Merge pull request #2141 from brendandburns/fix

Stop running benchmarks for every travis run.  They're flaky.
Require a KubeletClient in master.New().

Without this, tests which create a master
will panic with a nil pointer when the periodic
podCache update runs.

Deleted unused FakePodInfoGetter.
Added FakeKubeletClient.
Passed to master.New.
Required a KubeletClient in master.New.
Get user from request and put in authz attribs.

Added integration tests for user-based auth.