[core] Simplify tests.

test/box/args.result

-tarantool_silverbox -Z
-tarantool_silverbox: -Z: unknown option
-
-tarantool_silverbox --no-such-option
-tarantool_silverbox: --no-such-option: unknown option
-
-tarantool_silverbox --version --no-such-option
-tarantool_silverbox: --no-such-option: unknown option
-
 tarantool_silverbox --help
 Tarantool -- an efficient in-memory data store.
 Usage: tarantool_silverbox [OPTIONS]
@@ -23,7 +14,7 @@ Usage: tarantool_silverbox [OPTIONS]
   -h, --help              display this help and exit
   -V, --version           print program version and exit
 
-Please visit project home page at %launchpad
+Please visit project home page at http://launchpad.net/tarantool
 to see online documentation, submit bugs or contribute a patch.
 
 tarantool_silverbox -h
@@ -42,9 +33,18 @@ Usage: tarantool_silverbox [OPTIONS]
   -h, --help              display this help and exit
   -V, --version           print program version and exit
 
-Please visit project home page at %launchpad
+Please visit project home page at http://launchpad.net/tarantool
 to see online documentation, submit bugs or contribute a patch.
 
+tarantool_silverbox -Z
+tarantool_silverbox: -Z: unknown option
+
+tarantool_silverbox --no-such-option
+tarantool_silverbox: --no-such-option: unknown option
+
+tarantool_silverbox --version --no-such-option
+tarantool_silverbox: --no-such-option: unknown option
+
 tarantool_silverbox --config
 tarantool_silverbox: --config: option requires an option argument
 

test/box/args.test

-sys.stdout.push_filter("http://launchpad.net/tarantool", "%launchpad")
+server.test_option("--help")
+server.test_option("-h")
 sys.stdout.push_filter("(/\S+)+/tarantool", "tarantool")
 sys.stdout.push_filter("^\d+\.\d+ \d+", "<time> <pid>")
 server.test_option("-Z")
 server.test_option("--no-such-option")
 server.test_option("--version --no-such-option")
-server.test_option("--help")
-server.test_option("-h")
 server.test_option("--config")
 server.test_option("-c")
 server.test_option("--config tarantool.cfg")
@@ -16,4 +15,3 @@ server.test_option("--version")
 server.test_option("-V          ")
 sys.stdout.pop_filter()
 sys.stdout.pop_filter()
-sys.stdout.pop_filter()