Make e2e compatible with Go 1.3 and OS X.

Go 1.4 added the -o flag to the "go test" command as well as support for
the TestMain() function, so we must work around these not existing in
Go 1.3.

The version of readlink on OS X does not have the -f flag - so we'll
just skip canonicalizing the path.

hack/lib/golang.sh

@@ -361,10 +361,14 @@ kube::golang::build_binaries_for_platform() {
   for test in "${tests[@]:+${tests[@]}}"; do
       local outfile=$(kube::golang::output_filename_for_binary "${test}" \
         "${platform}")
-    go test -c -o "${outfile}" \
+    # Go 1.4 added -o to control where the binary is saved, but Go 1.3 doesn't
+    # have this flag. Whenever we deprecate go 1.3, update to use -o instead of
+    # calling mv.
+    go test -c \
       "${goflags[@]:+${goflags[@]}}" \
       -ldflags "${version_ldflags}" \
       "$(dirname ${test})"
+    mv -f "$(basename ${outfile})" "${outfile}"
   done
 }