testplanet executes cockroach and postgress tests parallel, therefore using http.DefaultClient is safe only as long as we don't modify it.
TestActivationRouting modifies it (client.CheckRedirect=...), therefore it should use a local version instead of the default one.
Problem reported by a jenkins build:
```
==================
WARNING: DATA RACE
Write at 0x000003486af0 by goroutine 143:
storj.io/storj/satellite/console/consoleweb_test.TestActivationRouting.func1()
/home/jenkins/workspace/storj-testing-experiments/satellite/console/consoleweb/server_test.go:66 +0x378
storj.io/storj/private/testplanet.Run.func1.1()
...
Previous read at 0x000003486af0 by goroutine 104:
net/http.(*Client).checkRedirect()
/usr/local/go/src/net/http/client.go:494 +0xd73
net/http.(*Client).do()
/usr/local/go/src/net/http/client.go:691 +0xd31
net/http.(*Client).Do()
/usr/local/go/src/net/http/client.go:593 +0x204
storj.io/storj/satellite/console/consoleweb_test.TestActivationRouting.func1.1()
/home/jenkins/workspace/storj-testing-experiments/satellite/console/consoleweb/server_test.go:48 +0x1e5
storj.io/storj/satellite/console/consoleweb_test.TestActivationRouting.func1()
/home/jenkins/workspace/storj-testing-experiments/satellite/console/consoleweb/server_test.go:74 +0x49d
storj.io/storj/private/testplanet.Run.func1.1()
...
```
Change-Id: I73319a5a593e067b906ec1fda70a44ca1e5a49a2
c136796308