testsuite: Allow user to override minimal logging

The testsuite was always forcing minimal logging. This is problematic
as it does not allow user to see full logging string. Allow user to
override the minimal logging if needed, the default is still to
enable minimal logging.

[DL: Commit 7f08061 reverts this.
     Since this is useful, let's re-apply this.]

Fixes zephyrproject-rtos#34696

Signed-off-by: Jukka Rissanen <[email protected]>
Signed-off-by: Daniel Leung <[email protected]>

subsys/testsuite/Kconfig

@@ -79,7 +79,7 @@ config TEST_LOGGING_DEFAULTS
  bool "Enable test case logging defaults"
  depends on TEST
  select LOG
- select LOG_MINIMAL
+ imply LOG_MINIMAL
  default y
  help
  Option which implements default policy of enabling logging in