tests/image: add path constants for Travis CI

The new set of constants allows to run the tests on Travis. The tests must
be build by:

go build -tags travis ./cmd/osbuild-image-tests

cmd/osbuild-image-tests/constants-travis.go

@@ -0,0 +1,24 @@
+// +build travis
+
+package main
+
+import "os/exec"
+
+func getOsbuildCommand(store string) *exec.Cmd {
+	cmd := exec.Command(
+		"python3",
+		"-m", "osbuild",
+		"--libdir", ".",
+		"--store", store,
+		"--json",
+		"-",
+	)
+	cmd.Dir = "osbuild"
+	return cmd
+}
+
+var imageInfoPath = "tools/image-info"
+var privateKeyPath = "test/keyring/id_rsa"
+var testCasesDirectoryPath = "test/cases"
+var userDataPath = "test/cloud-init/user-data"
+var metaDataPath = "test/cloud-init/meta-data"

cmd/osbuild-image-tests/constants.go

@@ -1,3 +1,5 @@
+// +build !travis
+
 package main
 
 import "os/exec"