aconfig: rename namespace -> package

What used to be referred to as a namespace is now called a package.

This CL is a semantic change only.

Bug: 285000854
Test: m nothing
Test: atest aconfig.test
Change-Id: If3fca67c415af75b44f316e16666b97089407069
diff --git a/tools/aconfig/testdata/first.values b/tools/aconfig/testdata/first.values
index 3c49111..c7b8a65 100644
--- a/tools/aconfig/testdata/first.values
+++ b/tools/aconfig/testdata/first.values
@@ -1,17 +1,17 @@
 flag_value {
-    namespace: "test"
+    package: "test"
     name: "disabled_ro"
     state: DISABLED
     permission: READ_ONLY
 }
 flag_value {
-    namespace: "test"
+    package: "test"
     name: "enabled_ro"
     state: DISABLED
     permission: READ_WRITE
 }
 flag_value {
-    namespace: "test"
+    package: "test"
     name: "enabled_rw"
     state: ENABLED
     permission: READ_WRITE
diff --git a/tools/aconfig/testdata/second.values b/tools/aconfig/testdata/second.values
index 3fe11ab..895b75b 100644
--- a/tools/aconfig/testdata/second.values
+++ b/tools/aconfig/testdata/second.values
@@ -1,5 +1,5 @@
 flag_value {
-    namespace: "test"
+    package: "test"
     name: "enabled_ro"
     state: ENABLED
     permission: READ_ONLY
diff --git a/tools/aconfig/testdata/test.aconfig b/tools/aconfig/testdata/test.aconfig
index 986a526..ff07473 100644
--- a/tools/aconfig/testdata/test.aconfig
+++ b/tools/aconfig/testdata/test.aconfig
@@ -1,4 +1,4 @@
-namespace: "test"
+package: "test"
 
 # This flag's final value is calculated from:
 # - test.aconfig: DISABLED + READ_WRITE (default)