Bump gophercloud

[mandre]

Unfortunatly, gophercloud v2.8.0 changed the signature of the ServiceClient() testhelper function. We need to replicate the changes from gophercloud/gophercloud@eed41cd here. Namely:

Create a "FakeServer" instance instead of configuring the global fake:

sed -i 's/th.SetupHTTP/fakeServer := th.SetupHTTP/g' $(ag 'th.SetupHTTP' -l)

Tear down this instance on test completion:

sed -i 's/defer th.TeardownHTTP/defer fakeServer.Teardown/g' $(ag 'defer th.TeardownHTTP' -l)

Update calls to the global 'Mux' instance with calls to the FakeServer version:

sed -i 's/th.Mux.HandleFunc/fakeServer.Mux.HandleFunc/g' $(ag 'th.Mux.HandleFunc' -l)

Update calls to ServiceClient to include a 'FakeServer' parameter:

sed -i 's/client.ServiceClient()/client.ServiceClient(fakeServer)/' $(ag -w client.ServiceClient -l)

Plus alises for the same:

sed -i 's/fake.ServiceClient()/fake.ServiceClient(fakeServer)/' $(ag 'fake.ServiceClient' -l)

Update definitions and calls to various MockFoo and HandleFoo helpers - plus lowercase, private variants of same - to include a 'FakeServer' parameter:

sed -i 's/\(func Mock\w\+(t \*testing.T\)/\1, fakeServer th.FakeServer/' $(ag 'func Mock\w+\(t \*testing.T' -l)
sed -i 's/\(\tMock\w\+(t\)/\1, fakeServer/' $(ag '\tMock\w+\(t' -l)
sed -i 's/\(func mock\w\+(t \*testing.T\)/\1, fakeServer th.FakeServer/' $(ag 'func mock\w+\(t \*testing.T' -l)
sed -i 's/\(\tmock\w\+(t\)/\1, fakeServer/' $(ag '\tmock\w+\(t' -l)
sed -i 's/\(func Handle\w\+(t \*testing.T\)/\1, fakeServer th.FakeServer/' $(ag 'func Handle\w+\(t \*testing.T' -l)
sed -i 's/\(\tHandle\w\+(t\)/\1, fakeServer/' $(ag '\tHandle\w+\(t' -l)
sed -i 's/\(func handle\w\+(t \*testing.T\)/\1, fakeServer th.FakeServer/' $(ag 'func handle\w+\(t \*testing.T' -l)
sed -i 's/\(\thandle\w\+(t\)/\1, fakeServer/' $(ag '\thandle\w+\(t' -l)

[mandre]

Once this merges we can close #265