Automatic merge from submit-queue (batch tested with PRs 41758, 44137)

Updated key.pm and cert.pm to remove error in setting up localhostCert pool.
Signed-off-by: Abhishek Dasgupta <a10gupta@linux.vnet.ibm.com>

Errors like following are coming while running `make test` with Go1.8:
```
=== RUN   TestProxyUpgrade
2017/02/16 06:36:19 http: TLS handshake error from 127.0.0.1:36740: tls: no cipher suite supported by both client and server
2017/02/16 06:36:19 http: panic serving 127.0.0.1:46266: runtime error: invalid memory address or nil pointer dereference
goroutine 31 [running]:
net/http.(*conn).serve.func1(0xc420213ea0)
	/usr/local/go/src/net/http/server.go:1721 +0xb0
panic(0x703e00, 0xc05b00)
	/usr/local/go/src/runtime/panic.go:489 +0x284
k8s.io/kubernetes/vendor/k8s.io/apiserver/pkg/registry/generic/rest.(*UpgradeAwareProxyHandler).tryUpgrade(0xc42034b0e0, 0xbbba60, 0xc4203f81c0, 0xc42043b300, 0xc4200a1b00)
	/root/kubernetes/_output/local/go/src/k8s.io/kubernetes/vendor/k8s.io/apiserver/pkg/registry/generic/rest/proxy.go:155 +0x4d8
k8s.io/kubernetes/vendor/k8s.io/apiserver/pkg/registry/generic/rest.(*UpgradeAwareProxyHandler).ServeHTTP(0xc42034b0e0, 0xbbba60, 0xc4203f81c0, 0xc42043b300)
	/root/kubernetes/_output/local/go/src/k8s.io/kubernetes/vendor/k8s.io/apiserver/pkg/registry/generic/rest/proxy.go:86 +0x7c
net/http.serverHandler.ServeHTTP(0xc4203ac370, 0xbbba60, 0xc4203f81c0, 0xc42043b300)
	/usr/local/go/src/net/http/server.go:2568 +0x90
net/http.(*conn).serve(0xc420213ea0, 0xbbc9a0, 0xc4202e9ec0)
	/usr/local/go/src/net/http/server.go:1825 +0x514
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2668 +0x254
--- FAIL: TestProxyUpgrade (0.01s)
	proxy_test.go:347: error setting up localhostCert pool
	proxy_test.go:377: https (valid hostname): proxy_test: x509: RSA key missing NULL parameters
	proxy_test.go:441: https (valid hostname + RootCAs): websocket dial err: websocket.Dial ws://127.0.0.1:45249/some/path: unexpected EOF
```

This PR is resolving similar errors through updating Certificate and Key variables.