New verbosity_test_case ini option (#11653)

Allow for the output of test case execution to be controlled independently from the application verbosity level. 

`verbosity_test_case` is the new ini setting to adjust this functionality.

Fix #11639

doc/en/how-to/output.rst

@@ -325,7 +325,9 @@ This is done by setting a verbosity level in the configuration file for the spec
 ``pytest --no-header`` with a value of ``2`` would have the same output as the previous example, but each test inside
 the file is shown by a single character in the output.
 
-(Note: currently this is the only option available, but more might be added in the future).
+:confval:`verbosity_test_cases`: Controls how verbose the test execution output should be when pytest is executed.
+Running ``pytest --no-header`` with a value of ``2`` would have the same output as the first verbosity example, but each
+test inside the file gets its own line in the output.
 
 .. _`pytest.detailed_failed_tests_usage`:
 

doc/en/reference/reference.rst

@@ -1865,6 +1865,19 @@ passed multiple times. The expected format is ``name=value``. For example::
     "auto" can be used to explicitly use the global verbosity level.
 
 
+.. confval:: verbosity_test_cases
+
+    Set a verbosity level specifically for test case execution related output, overriding the application wide level.
+
+    .. code-block:: ini
+
+        [pytest]
+        verbosity_test_cases = 2
+
+    Defaults to application wide verbosity level (via the ``-v`` command-line option). A special value of
+    "auto" can be used to explicitly use the global verbosity level.
+
+
 .. confval:: xfail_strict
 
     If set to ``True``, tests marked with ``@pytest.mark.xfail`` that actually succeed will by default fail the