Rename "install" -> "get" and "update" -> "upgrade".

sdk/lib/_internal/pub/test/pub_get_and_upgrade_test.dart

Index: sdk/lib/_internal/pub/test/pub_get_and_upgrade_test.dart
diff --git a/sdk/lib/_internal/pub/test/pub_install_and_update_test.dart b/sdk/lib/_internal/pub/test/pub_get_and_upgrade_test.dart
similarity index 98%
rename from sdk/lib/_internal/pub/test/pub_install_and_update_test.dart
rename to sdk/lib/_internal/pub/test/pub_get_and_upgrade_test.dart
index f1bbf152d762b94e420711cde1e0de40a63a34bb..f0df450a50b2053c57e271f955ee556ffaaa5bfc 100644
--- a/sdk/lib/_internal/pub/test/pub_install_and_update_test.dart
+++ b/sdk/lib/_internal/pub/test/pub_get_and_upgrade_test.dart
@@ -12,7 +12,7 @@ import 'test_pub.dart';
 main() {
   initConfig();
 
-  forBothPubInstallAndUpdate((command) {
+  forBothPubGetAndUpgrade((command) {
     group('requires', () {
       integration('a pubspec', () {
         d.dir(appPath, []).create();