This fixes golint failures under test/e2e/framework/providers/gce/.
Cleanup:
* FirewallTimeoutDefault is not used at all, so remove it.
* FirewallTestTcpTimeout, FirewallTestHttpPort and FirewallTestUdpPort
are used at test/e2e/network/firewall.go only. So move them.
Not all users of the E2E framework want to run cloud-provider specific
tests. By splitting out the code it becomes possible to decide in
a E2E test suite which providers are supported.
This is achieved in two ways:
- the framework calls certain functions through a provider
interface instead of calling specific cloud provider functions
directly
- tests that are cloud-provider specific directly import the
new provider packages
The ingress test utilities are only needed by a few tests. Splitting
them out into a separate package makes the framework simpler for test
suites not using those tests.
Fixes: #66649
