test/py: Shorten u_boot_console

This fixture name is quite long and results in lots of verbose code.
We know this is U-Boot so the 'u_boot_' part is not necessary.

But it is also a bit of a misnomer, since it provides access to all the
information available to tests. It is not just the console.

It would be too confusing to use con as it would be confused with
config and it is probably too short.

So shorten it to 'ubman'.

Signed-off-by: Simon Glass <sjg@chromium.org>
Link: https://lore.kernel.org/u-boot/CAFLszTgPa4aT_J9h9pqeTtLCVn4x2JvLWRcWRD8NaN3uoSAtyA@mail.gmail.com/
diff --git a/doc/develop/py_testing.rst b/doc/develop/py_testing.rst
index b504730..b88d7e3 100644
--- a/doc/develop/py_testing.rst
+++ b/doc/develop/py_testing.rst
@@ -506,24 +506,24 @@
 Please refer to the pytest documentation for details of writing pytest tests.
 Details specific to the U-Boot test suite are described below.
 
-A test fixture named `u_boot_console` should be used by each test function. This
+A test fixture named `ubman` should be used by each test function. This
 provides the means to interact with the U-Boot console, and retrieve board and
 environment configuration information.
 
-The function `u_boot_console.run_command()` executes a shell command on the
+The function `ubman.run_command()` executes a shell command on the
 U-Boot console, and returns all output from that command. This allows
 validation or interpretation of the command output. This function validates
 that certain strings are not seen on the U-Boot console. These include shell
 error messages and the U-Boot sign-on message (in order to detect unexpected
 board resets). See the source of `u_boot_console_base.py` for a complete list of
 "bad" strings. Some test scenarios are expected to trigger these strings. Use
-`u_boot_console.disable_check()` to temporarily disable checking for specific
+`ubman.disable_check()` to temporarily disable checking for specific
 strings. See `test_unknown_cmd.py` for an example.
 
 Board- and board-environment configuration values may be accessed as sub-fields
-of the `u_boot_console.config` object, for example
-`u_boot_console.config.ram_base`.
+of the `ubman.config` object, for example
+`ubman.config.ram_base`.
 
 Build configuration values (from `.config`) may be accessed via the dictionary
-`u_boot_console.config.buildconfig`, with keys equal to the Kconfig variable
+`ubman.config.buildconfig`, with keys equal to the Kconfig variable
 names.