change regex pattern

Signed-off-by: LiZhenCheng9527 <lizhencheng6@huawei.com>

Author: LiZhenCheng9527

ctl/version/version.go

@@ -142,7 +142,7 @@ func getVersion(client kube.CLIClient, podName string) (version version.Info) {
 
 // match release version vx.y.z-(alpha)
 func stringMatch(str string) bool {
-	pattern := `^v\d+\.\d+\.\d+(-[a-zA-Z0-9]+)?$`
+	pattern := `^v\d+\.\d+\.\d+(-[a-zA-Z0-9]+(\.[a-zA-Z0-9]+)*)?$`
 	regex := regexp.MustCompile(pattern)
 
 	return regex.MatchString(str)

ctl/version/version_test.go

@@ -49,11 +49,18 @@ func Test_stringMatch(t *testing.T) {
 			want: false,
 		},
 		{
-			name: "Incorrect Suffix",
+			name: "alpha.0 Suffix",
 			args: args{
 				str: "v1.1.1-alpha.0",
 			},
-			want: false,
+			want: true,
+		},
+		{
+			name: "alpha.bate suffix",
+			args: args{
+				str: "v1.1.1-alpha.beta",
+			},
+			want: true,
 		},
 	}
 	for _, tt := range tests {