Allow extending of the list of directories to be scanned for VSDK

Bug: 180925851
Bug: 181564692
Test: m nothing, manually
Change-Id: Ifff95db4c9ec362322fecca08f7fd1a7b60755c0
diff --git a/android/variable.go b/android/variable.go
index be12a0a..a5e9ab4 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -314,6 +314,11 @@
 	DirectedRecoverySnapshot bool            `json:",omitempty"`
 	RecoverySnapshotModules  map[string]bool `json:",omitempty"`
 
+	VendorSnapshotDirsIncluded   []string `json:",omitempty"`
+	VendorSnapshotDirsExcluded   []string `json:",omitempty"`
+	RecoverySnapshotDirsExcluded []string `json:",omitempty"`
+	RecoverySnapshotDirsIncluded []string `json:",omitempty"`
+
 	BoardVendorSepolicyDirs      []string `json:",omitempty"`
 	BoardOdmSepolicyDirs         []string `json:",omitempty"`
 	BoardReqdMaskPolicy          []string `json:",omitempty"`