Use empty string for core image variant

Use the empty string for the core image variant so that modules
added to imageMutator do not change their build directory.

Bug: 142286466
Test: m checkbuild
Change-Id: Ida4534d9a4d6176236aaa480fed359ce27acfaa1
Merged-In: Ida4534d9a4d6176236aaa480fed359ce27acfaa1
(cherry picked from commit 72d685ee7f45e5393be44ae4159edf083ac918de)
diff --git a/sysprop/sysprop_test.go b/sysprop/sysprop_test.go
index 81f4c53..7b90673 100644
--- a/sysprop/sysprop_test.go
+++ b/sysprop/sysprop_test.go
@@ -295,10 +295,10 @@
 	}
 
 	for _, variant := range []string{
-		"android_arm_armv7-a-neon_core_shared",
-		"android_arm_armv7-a-neon_core_static",
-		"android_arm64_armv8-a_core_shared",
-		"android_arm64_armv8-a_core_static",
+		"android_arm_armv7-a-neon_shared",
+		"android_arm_armv7-a-neon_static",
+		"android_arm64_armv8-a_shared",
+		"android_arm64_armv8-a_static",
 	} {
 		ctx.ModuleForTests("libsysprop-platform", variant)
 
@@ -310,17 +310,17 @@
 	ctx.ModuleForTests("sysprop-vendor", "android_common")
 
 	// Check for exported includes
-	coreVariant := "android_arm64_armv8-a_core_static"
+	coreVariant := "android_arm64_armv8-a_static"
 	vendorVariant := "android_arm64_armv8-a_vendor.VER_static"
 
-	platformInternalPath := "libsysprop-platform/android_arm64_armv8-a_core_static/gen/sysprop/include"
-	platformPublicCorePath := "libsysprop-platform/android_arm64_armv8-a_core_static/gen/sysprop/public/include"
+	platformInternalPath := "libsysprop-platform/android_arm64_armv8-a_static/gen/sysprop/include"
+	platformPublicCorePath := "libsysprop-platform/android_arm64_armv8-a_static/gen/sysprop/public/include"
 	platformPublicVendorPath := "libsysprop-platform/android_arm64_armv8-a_vendor.VER_static/gen/sysprop/public/include"
 
-	platformOnProductPath := "libsysprop-platform-on-product/android_arm64_armv8-a_core_static/gen/sysprop/public/include"
+	platformOnProductPath := "libsysprop-platform-on-product/android_arm64_armv8-a_static/gen/sysprop/public/include"
 
 	vendorInternalPath := "libsysprop-vendor/android_arm64_armv8-a_vendor.VER_static/gen/sysprop/include"
-	vendorPublicPath := "libsysprop-vendor/android_arm64_armv8-a_core_static/gen/sysprop/public/include"
+	vendorPublicPath := "libsysprop-vendor/android_arm64_armv8-a_static/gen/sysprop/public/include"
 
 	platformClient := ctx.ModuleForTests("cc-client-platform", coreVariant)
 	platformFlags := platformClient.Rule("cc").Args["cFlags"]