fixup! scalar: do initialize gvfs.sharedCache

In this commit, we added the 'credential.interactive=never' option to
unattended scalar options. This should be changed to 'false' to match
the modern use of this config option.

But also, we have a test that requires using askpass to get credentials,
but the test is in unattended mode. Fix that test to include
'credential.interactive=true' to bypass this issue.

scalar.c

@@ -1403,7 +1403,7 @@ int cmd_main(int argc, const char **argv)
 	if (is_unattended()) {
 		setenv("GIT_ASKPASS", "", 0);
 		setenv("GIT_TERMINAL_PROMPT", "false", 0);
-		git_config_push_parameter("credential.interactive=never");
+		git_config_push_parameter("credential.interactive=false");
 	}
 
 	while (argc > 1 && *argv[1] == '-') {

t/t9210-scalar.sh

@@ -303,7 +303,11 @@ test_expect_success 'start GVFS-enabled server' '
 test_expect_success '`scalar clone` with GVFS-enabled server' '
 	: the fake cache server requires fake authentication &&
 	git config --global core.askPass true &&
-	scalar clone --single-branch -- http://$HOST_PORT/ using-gvfs &&
+
+	# We must set credential.interactive=true to bypass a setting
+	# in "scalar clone" that disables interactive credentials during
+	# an unattended command.
+	scalar -c credential.interactive=true clone --single-branch -- http://$HOST_PORT/ using-gvfs &&
 
 	: verify that the shared cache has been configured &&
 	cache_key="url_$(printf "%s" http://$HOST_PORT/ |