transport: respect verbosity when setting upstream

A command such as `git push -qu origin feature` will print "Branch
'feature' set up to track remote branch 'feature' from 'origin'." even
when --quiet is passed. In this case it's because install_branch_config() is
always called with BRANCH_CONFIG_VERBOSE.

struct transport keeps track of the desired verbosity. Fix the above
issue by passing BRANCH_CONFIG_VERBOSE conditionally based on that.

Signed-off-by: Øystein Walle <oystwa@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t5523-push-upstream.sh

@@ -119,4 +119,11 @@ test_expect_success TTY 'quiet push' '
 	test_must_be_empty output
 '
 
+test_expect_success TTY 'quiet push -u' '
+	ensure_fresh_upstream &&
+
+	test_terminal git push --quiet -u --no-progress upstream main 2>&1 | tee output &&
+	test_must_be_empty output
+'
+
 test_done

transport.c

@@ -108,11 +108,11 @@ static void set_upstreams(struct transport *transport, struct ref *refs,
 		if (!remotename || !starts_with(remotename, "refs/heads/"))
 			continue;
 
-		if (!pretend)
-			install_branch_config(BRANCH_CONFIG_VERBOSE,
-				localname + 11, transport->remote->name,
-				remotename);
-		else
+		if (!pretend) {
+			int flag = transport->verbose < 0 ? 0 : BRANCH_CONFIG_VERBOSE;
+			install_branch_config(flag, localname + 11,
+				transport->remote->name, remotename);
+		} else if (transport->verbose >= 0)
 			printf(_("Would set upstream of '%s' to '%s' of '%s'\n"),
 				localname + 11, remotename + 11,
 				transport->remote->name);