Updates and additions on some integration tests

- Use defer to kill traefik process (to fix the still running traefik
  binaries if the given tests is failing before the kill)
- Add TestWithWebConfig
- Add *.test to gitignore to ignore the test binaries generated by go.

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

integration/integration_test.go

@@ -32,9 +32,6 @@ func init() {
 
 var traefikBinary = "../dist/traefik"
 
-// SimpleSuite
-type SimpleSuite struct{ BaseSuite }
-
 // File test suites
 type FileSuite struct{ BaseSuite }