Separate hidden API flags needed in sdk snapshots for S and T

Previously, the behavior of the stub_flags and all_flags properties
was different between S and T. In S they contained paths for the
complete set of stub flags and all the encoded flags. However, in T
they contained filtered sets of flags which if used in S would prevent
build checks from detecting possible inconsistencies. Also, a new
signature_patterns property was added in T that is not supported in S.

This change creates separate properties/files for T and reverts the
behavior of the properties/files that were added in S back to how they
behaved in S. The new properties are called filtered_stub_flags and
filtered_flags.

The S and T properties are tagged with the appropriate
supported_build_releases tag to ensure that they are only output when
specifically targeted.

Bug: 197842263
Test: m nothing
Change-Id: Iec8b9c539796c507245b69c0aed980fde6d8694f

apex/apex_test.go

@@ -5058,8 +5058,9 @@ func TestBootDexJarsFromSourcesAndPrebuilts(t *testing.T) {
 				annotation_flags: "my-bootclasspath-fragment/annotation-flags.csv",
 				metadata: "my-bootclasspath-fragment/metadata.csv",
 				index: "my-bootclasspath-fragment/index.csv",
-				stub_flags: "my-bootclasspath-fragment/stub-flags.csv",
-				all_flags: "my-bootclasspath-fragment/all-flags.csv",
+				signature_patterns: "my-bootclasspath-fragment/signature-patterns.csv",
+				filtered_stub_flags: "my-bootclasspath-fragment/filtered-stub-flags.csv",
+				filtered_flags: "my-bootclasspath-fragment/filtered-flags.csv",
 			},
 		}
 
@@ -5109,8 +5110,9 @@ func TestBootDexJarsFromSourcesAndPrebuilts(t *testing.T) {
 				annotation_flags: "my-bootclasspath-fragment/annotation-flags.csv",
 				metadata: "my-bootclasspath-fragment/metadata.csv",
 				index: "my-bootclasspath-fragment/index.csv",
-				stub_flags: "my-bootclasspath-fragment/stub-flags.csv",
-				all_flags: "my-bootclasspath-fragment/all-flags.csv",
+				signature_patterns: "my-bootclasspath-fragment/signature-patterns.csv",
+				filtered_stub_flags: "my-bootclasspath-fragment/filtered-stub-flags.csv",
+				filtered_flags: "my-bootclasspath-fragment/filtered-flags.csv",
 			},
 		}
 
@@ -5238,8 +5240,9 @@ func TestBootDexJarsFromSourcesAndPrebuilts(t *testing.T) {
 				annotation_flags: "my-bootclasspath-fragment/annotation-flags.csv",
 				metadata: "my-bootclasspath-fragment/metadata.csv",
 				index: "my-bootclasspath-fragment/index.csv",
-				stub_flags: "my-bootclasspath-fragment/stub-flags.csv",
-				all_flags: "my-bootclasspath-fragment/all-flags.csv",
+				signature_patterns: "my-bootclasspath-fragment/signature-patterns.csv",
+				filtered_stub_flags: "my-bootclasspath-fragment/filtered-stub-flags.csv",
+				filtered_flags: "my-bootclasspath-fragment/filtered-flags.csv",
 			},
 		}
 
@@ -5324,8 +5327,9 @@ func TestBootDexJarsFromSourcesAndPrebuilts(t *testing.T) {
 				annotation_flags: "my-bootclasspath-fragment/annotation-flags.csv",
 				metadata: "my-bootclasspath-fragment/metadata.csv",
 				index: "my-bootclasspath-fragment/index.csv",
-				stub_flags: "my-bootclasspath-fragment/stub-flags.csv",
-				all_flags: "my-bootclasspath-fragment/all-flags.csv",
+				signature_patterns: "my-bootclasspath-fragment/signature-patterns.csv",
+				filtered_stub_flags: "my-bootclasspath-fragment/filtered-stub-flags.csv",
+				filtered_flags: "my-bootclasspath-fragment/filtered-flags.csv",
 			},
 		}
 
@@ -5408,8 +5412,9 @@ func TestBootDexJarsFromSourcesAndPrebuilts(t *testing.T) {
 				annotation_flags: "my-bootclasspath-fragment/annotation-flags.csv",
 				metadata: "my-bootclasspath-fragment/metadata.csv",
 				index: "my-bootclasspath-fragment/index.csv",
-				stub_flags: "my-bootclasspath-fragment/stub-flags.csv",
-				all_flags: "my-bootclasspath-fragment/all-flags.csv",
+				signature_patterns: "my-bootclasspath-fragment/signature-patterns.csv",
+				filtered_stub_flags: "my-bootclasspath-fragment/filtered-stub-flags.csv",
+				filtered_flags: "my-bootclasspath-fragment/filtered-flags.csv",
 			},
 		}
 
@@ -7441,8 +7446,9 @@ func TestDexpreoptAccessDexFilesFromPrebuiltApex(t *testing.T) {
 					annotation_flags: "my-bootclasspath-fragment/annotation-flags.csv",
 					metadata: "my-bootclasspath-fragment/metadata.csv",
 					index: "my-bootclasspath-fragment/index.csv",
-					stub_flags: "my-bootclasspath-fragment/stub-flags.csv",
-					all_flags: "my-bootclasspath-fragment/all-flags.csv",
+					signature_patterns: "my-bootclasspath-fragment/signature-patterns.csv",
+					filtered_stub_flags: "my-bootclasspath-fragment/filtered-stub-flags.csv",
+					filtered_flags: "my-bootclasspath-fragment/filtered-flags.csv",
 				},
 			}