evetestkit : add error log function and more

- add LogTimeErrorf
- add Ubuntu 20.04 app template

Signed-off-by: Shahriyar Jalayeri <[email protected]>

Author: shjala

pkg/evetestkit/utils.go

@@ -33,6 +33,10 @@ const (
 	// AppDefaultCloudConfig is a default cloud-init configuration for the VM which just
 	// enables ssh password authentication and sets the password to "passw0rd".
 	AppDefaultCloudConfig = "#cloud-config\npassword: " + AppDefaultSSHPass + "\nchpasswd: { expire: False }\nssh_pwauth: True\n"
+	// Ubuntu2204 indicates the version of Ubuntu 22.04
+	Ubuntu2204 = "22.04"
+	// Ubuntu2004 indicates the version of Ubuntu 20.04
+	Ubuntu2004 = "20.04"
 )
 
 var (
@@ -46,6 +50,14 @@ var (
 		os:      "ubuntu-server-cloudimg-amd64",
 		version: "22.04",
 	}
+	ubuntu2004 = fixedAppInstanceConfig{
+		appLink: "https://cloud-images.ubuntu.com/releases/20.04/release/ubuntu-20.04-server-cloudimg-amd64.img",
+		sshPort: "8027",
+		sshUser: AppDefaultSSHUser,
+		sshPass: AppDefaultSSHPass,
+		os:      "ubuntu-server-cloudimg-amd64",
+		version: Ubuntu2004,
+	}
 )
 
 type fixedAppInstanceConfig struct {
@@ -578,6 +590,19 @@ func (node *EveNode) LogTimeInfof(format string, args ...interface{}) {
 	}
 }
 
+// LogTimeErrorf logs an error message with a timestamp, if it is called in the context
+// of a test function it will call t.Fail and t.Logf, otherwise it will call fmt.Print
+func (node *EveNode) LogTimeErrorf(format string, args ...interface{}) {
+	out := utils.AddTimestampf(format+"\n", args...)
+	if node.t != nil {
+		node.t.Fail()
+		node.t.Logf(out)
+	} else {
+		fmt.Print(out)
+	}
+}
+
+// SetTesting sets the testing.T object for the EveNode
 func (node *EveNode) SetTesting(t *testing.T) {
 	node.t = t
 }