kconfigs/Kconfig.kdevops: enable AB testing with TEST_AB

Often one wants to just enable AB testing. Instead of having another
kconfig file for it, just allow the user to use something like this:

make defconfig-xfs_reflink TEST_AB=y

That allows us to remove uncessary defconfigs just to enable AB testing.

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

Author: mcgrof

kconfigs/Kconfig.kdevops

@@ -94,8 +94,14 @@ config KDEVOPS_MAKE_VERBOSE
 
 	  If unsure, say N.
 
+config KDEVOPS_BASELINE_AND_DEV_SET_BY_CLI
+	bool
+	output yaml
+	default $(shell, scripts/check-cli-set-var.sh TEST_AB)
+
 config KDEVOPS_BASELINE_AND_DEV
 	bool "Enable both a baseline and development system per target test"
+	default y if KDEVOPS_BASELINE_AND_DEV_SET_BY_CLI
 	default n
 	help
 	  By default kdevops will only spawn a baseline target node (local