Propagate permitted packages to sdk snapshot

Previously, permitted_packages were not copied to the sdk snapshot.
This change corrects that.

Bug: 193763688
Test: m nothing
      - Added unit tests, which all failed and then fixed the tests.
Change-Id: I4560987f746f78c0ae706058195b6db4bea438aa
diff --git a/sdk/bootclasspath_fragment_sdk_test.go b/sdk/bootclasspath_fragment_sdk_test.go
index a458cba..2f93c84 100644
--- a/sdk/bootclasspath_fragment_sdk_test.go
+++ b/sdk/bootclasspath_fragment_sdk_test.go
@@ -327,6 +327,7 @@
     visibility: ["//visibility:public"],
     apex_available: ["myapex"],
     jars: ["java/mybootlib.jar"],
+    permitted_packages: ["mybootlib"],
 }
 
 java_sdk_library_import {
@@ -336,6 +337,7 @@
     apex_available: ["myapex"],
     shared_library: true,
     compile_dex: true,
+    permitted_packages: ["myothersdklibrary"],
     public: {
         jars: ["sdk_library/public/myothersdklibrary-stubs.jar"],
         stub_srcs: ["sdk_library/public/myothersdklibrary_stub_sources"],
@@ -409,6 +411,7 @@
     visibility: ["//visibility:public"],
     apex_available: ["myapex"],
     jars: ["java/mybootlib.jar"],
+    permitted_packages: ["mybootlib"],
 }
 
 java_sdk_library_import {
@@ -418,6 +421,7 @@
     apex_available: ["myapex"],
     shared_library: true,
     compile_dex: true,
+    permitted_packages: ["myothersdklibrary"],
     public: {
         jars: ["sdk_library/public/myothersdklibrary-stubs.jar"],
         stub_srcs: ["sdk_library/public/myothersdklibrary_stub_sources"],
@@ -779,6 +783,7 @@
 				srcs: ["Test.java"],
 				compile_dex: true,
 				public: {enabled: true},
+				permitted_packages: ["mysdklibrary"],
 			}
 		`),
 	).RunTest(t)
@@ -822,6 +827,7 @@
     visibility: ["//visibility:public"],
     apex_available: ["myapex"],
     jars: ["java/mybootlib.jar"],
+    permitted_packages: ["mybootlib"],
 }
 
 java_sdk_library_import {
@@ -831,6 +837,7 @@
     apex_available: ["//apex_available:platform"],
     shared_library: true,
     compile_dex: true,
+    permitted_packages: ["mysdklibrary"],
     public: {
         jars: ["sdk_library/public/mysdklibrary-stubs.jar"],
         stub_srcs: ["sdk_library/public/mysdklibrary_stub_sources"],