fstests: add support to customize groups through CLI

It would be good to allow CIs to customize the group we want to test.
Right now we default to "auto" but it would be good for a CI to let
the user drop down a menu and click on "quick" for instance.

Demo:

$ make mrproper
$ make defconfig-xfs_reflink_4k FSTESTS_GROUP="quick"
$ grep FSTESTS_RUN_CUSTOM_GROUP_TESTS .config
CONFIG_FSTESTS_RUN_CUSTOM_GROUP_TESTS="quick"

Suggested-by: Carlos Maiolino <[email protected]>
Signed-off-by: Luis Chamberlain <[email protected]>

Author: mcgrof

workflows/fstests/Kconfig

@@ -5,6 +5,11 @@ config FSTESTS_SOAK_DURATION_SET_BY_CLI
 	output yaml
 	default $(shell, scripts/check-cli-set-var.sh SOAK_DURATION)
 
+config FSTESTS_GROUP_TESTS_SET_BY_CLI
+	bool
+	output yaml
+	default $(shell, scripts/check-cli-set-var.sh FSTESTS_GROUP)
+
 config HAVE_DISTRO_PREFERS_FSTESTS_WATCHDOG
 	bool
 	default n
@@ -759,7 +764,9 @@ config FSTESTS_RUN_CUSTOM_GROUP_TESTS
 	string "Run a custom group of fstests"
 	default "auto" if FSTESTS_RUN_AUTO_GROUP_TESTS
 	depends on FSTESTS_RUN_TESTS
-	depends on !FSTESTS_ENABLE_RUN_CUSTOM_TESTS
+	depends on FSTESTS_ENABLE_RUN_CUSTOM_TESTS
+	default $(shell, ./scripts/append-makefile-vars.sh $(FSTESTS_GROUP)) if FSTESTS_ENABLE_RUN_CUSTOM_TESTS && FSTESTS_GROUP_TESTS_SET_BY_CLI
+	default "auto" if FSTESTS_ENABLE_RUN_CUSTOM_TESTS && !FSTESTS_GROUP_TESTS_SET_BY_CLI
 	help
 	  To configure fstests to run specific group of tests instead of the
 	  'auto' group.
@@ -774,7 +781,7 @@ config FSTESTS_EXCLUDE_TEST_GROUPS
 config FSTESTS_ENABLE_RUN_CUSTOM_TESTS
 	bool "Enable running custom tests"
 	depends on FSTESTS_RUN_TESTS
-	default n
+	default FSTESTS_GROUP_TESTS_SET_BY_CLI
 	help
 	  Enable this only if you want to always run custom tests.
 	  In the future we will support the ability to dynamically run