Refine execute_command function for printing aligned tabbed tables (#…

…1379)

The commit adds type hints to parameters and return type of the `execute_command` function in util.py script. It also introduces a change in printing logic to handle tabs. Further, new test cases are added in test_util.py script to confirm this behavior.

### Before

```
10:31:54  >: Cluster Admin:		true
10:31:54  >: Organization:		N/A
10:31:54  >: Creator:		N/A
10:31:54  >: Email:			N/A
10:31:54  >: AccountNumber:          N/A
10:31:54  >: Created:		2024-04-12T08:31:54Z
10:31:54  >: Expiration:		2024-04-13T20:31:53Z
```

### After

```
20:02:16  >: Cluster Admin:          true
20:02:16  >: Organization:           N/A
20:02:16  >: Creator:                N/A
20:02:16  >: Email:                  N/A
20:02:16  >: AccountNumber:          N/A
20:02:16  >: Created:                2024-04-12T18:02:16Z
20:02:16  >: Expiration:             2024-04-14T06:02:15Z
```

Signed-off-by: Jiri Daněk <jdanek@redhat.com>

ods_ci/selftests/utils/scripts/test_util.py

@@ -70,6 +70,17 @@ def test_stdout(self):
     def test_stderr(self):
         assert util.execute_command("echo stderr >&2") == "stderr\n"
 
+    def test_output_printing_spaces(self):
+        with contextlib.redirect_stdout(io.StringIO()) as output:
+            assert util.execute_command("echo hello world") == "hello world\n"
+        assert output.getvalue() == ">: hello world\n"
+
+    def test_output_printing_tab(self):
+        with contextlib.redirect_stdout(io.StringIO()) as output:
+            # use echo binary, not the shell builtin, because some shells (e.g. /bin/sh on Ubuntu) don't support -e
+            assert util.execute_command("/usr/bin/echo -e 'hello\tworld'") == "hello\tworld\n"
+        assert output.getvalue() == ">: hello   world\n"
+
     def test_string_cmd(self):
         assert util.execute_command("echo hello world", print_stdout=False) == "hello world\n"
 

ods_ci/utils/scripts/util.py

@@ -53,7 +53,7 @@ def read_yaml(filename):
         return None
 
 
-def execute_command(cmd, print_stdout=True):
+def execute_command(cmd: str, print_stdout: bool = True) -> str | None:
     """
     Executes command in the local node, and print real-time output
     """
@@ -72,7 +72,7 @@ def execute_command(cmd, print_stdout=True):
             for line in p.stdout:
                 output.append(line)
                 if print_stdout:
-                    print(">:", line, end="")
+                    print(">:", line.expandtabs(tabsize=8), end="")
                     sys.stdout.flush()
             return "".join(output)
     except Exception as e: