CUSTESC-33731: Make rule match test report rule in 0-index base

This changes guarantees that the coommand to report rule matches when
testing local config reports the rule number using the 0-based indexing.
This is to be consistent with the 0-based indexing on the log lines when
proxying requests.

cmd/cloudflared/tunnel/ingress_subcommands.go

@@ -139,7 +139,7 @@ func testURLCommand(c *cli.Context) error {
 	}
 
 	_, i := ing.FindMatchingRule(requestURL.Hostname(), requestURL.Path)
-	fmt.Printf("Matched rule #%d\n", i+1)
+	fmt.Printf("Matched rule #%d\n", i)
 	fmt.Println(ing.Rules[i].MultiLineString())
 	return nil
 }

component-tests/test_config.py

@@ -36,17 +36,17 @@ class TestConfig:
         _ = start_cloudflared(tmp_path, config, validate_args)
 
         self.match_rule(tmp_path, config,
-                        "http://example.com/index.html", 1)
+                        "http://example.com/index.html", 0)
         self.match_rule(tmp_path, config,
-                        "https://example.com/index.html", 1)
+                        "https://example.com/index.html", 0)
         self.match_rule(tmp_path, config,
-                        "https://api.example.com/login", 2)
+                        "https://api.example.com/login", 1)
         self.match_rule(tmp_path, config,
-                        "https://wss.example.com", 3)
+                        "https://wss.example.com", 2)
         self.match_rule(tmp_path, config,
-                        "https://ssh.example.com", 4)
+                        "https://ssh.example.com", 3)
         self.match_rule(tmp_path, config,
-                        "https://api.example.com", 5)
+                        "https://api.example.com", 4)
 
     # This is used to check that the command tunnel ingress url <url> matches rule number <rule_num>. Note that rule number uses 1-based indexing