Add ro.bootimage.* property contexts

In addition, allow shell to read this property.

Test: getprop -Z
Test: cts-tradefed run cts -m CtsGestureTestCases
      and check /sdcard/device-info-files/PropertyDeviceInfo.deviceinfo.json

Bug: 169169031
Change-Id: Ib71b01bac326354696e159129f9dea4c2e918c51
diff --git a/private/compat/27.0/27.0.ignore.cil b/private/compat/27.0/27.0.ignore.cil
index a566eaa..202baaf 100644
--- a/private/compat/27.0/27.0.ignore.cil
+++ b/private/compat/27.0/27.0.ignore.cil
@@ -33,6 +33,7 @@
     bluetooth_a2dp_offload_prop
     bpfloader
     bpfloader_exec
+    build_bootimage_prop
     build_odm_prop
     build_prop
     build_vendor_prop