fix(install) - Install was failing with '-m 0333'

The parse_numeric was getting ' 0333' as input
and showing 'mode is too large ( 0333 > 7777) as error

Syntax used: https://sources.debian.org/src/firebird3.0/3.0.7.33374.ds4-1/debian/functions.sh/?hl=145#L145

src/uu/install/src/install.rs

@@ -146,7 +146,6 @@ pub fn uumain(args: impl uucore::Args) -> i32 {
                 .help("set permission mode (as in chmod), instead of rwxr-xr-x")
                 .value_name("MODE")
                 .takes_value(true)
-                .min_values(1)
         )
         .arg(
             Arg::with_name(OPT_OWNER)

src/uucore/src/lib/features/mode.rs

@@ -9,7 +9,7 @@
 
 pub fn parse_numeric(fperm: u32, mut mode: &str) -> Result<u32, String> {
     let (op, pos) = parse_op(mode, Some('='))?;
-    mode = mode[pos..].trim_start_matches('0');
+    mode = mode[pos..].trim().trim_start_matches('0');
     if mode.len() > 4 {
         Err(format!("mode is too large ({} > 7777)", mode))
     } else {

tests/by-util/test_install.rs

@@ -102,20 +102,44 @@ fn test_install_component_directories() {
 
 #[test]
 fn test_install_mode_numeric() {
-    let (at, mut ucmd) = at_and_ucmd!();
+    let scene = TestScenario::new(util_name!());
+    let at = &scene.fixtures;
     let dir = "test_install_target_dir_dir_e";
+    let dir2 = "test_install_target_dir_dir_e2";
+
     let file = "test_install_target_dir_file_e";
     let mode_arg = "--mode=333";
 
     at.touch(file);
     at.mkdir(dir);
-    ucmd.arg(file).arg(dir).arg(mode_arg).succeeds().no_stderr();
+    scene
+        .ucmd()
+        .arg(file)
+        .arg(dir)
+        .arg(mode_arg)
+        .succeeds()
+        .no_stderr();
 
     let dest_file = &format!("{}/{}", dir, file);
     assert!(at.file_exists(file));
     assert!(at.file_exists(dest_file));
     let permissions = at.metadata(dest_file).permissions();
     assert_eq!(0o100333 as u32, PermissionsExt::mode(&permissions));
+
+    let mode_arg = "-m 0333";
+    at.mkdir(dir2);
+
+    let result = scene.ucmd().arg(mode_arg).arg(file).arg(dir2).run();
+
+    println!("stderr = {:?}", result.stderr);
+    println!("stdout = {:?}", result.stdout);
+
+    assert!(result.success);
+    let dest_file = &format!("{}/{}", dir2, file);
+    assert!(at.file_exists(file));
+    assert!(at.file_exists(dest_file));
+    let permissions = at.metadata(dest_file).permissions();
+    assert_eq!(0o100333 as u32, PermissionsExt::mode(&permissions));
 }
 
 #[test]