chore: migrate appengine to the PHP microgenerator

Committer: @miraleung
PiperOrigin-RevId: 373490960

google/appengine/v1/BUILD.bazel

@@ -206,13 +206,14 @@ py_gapic_assembly_pkg(
 
 ##############################################################################
 # PHP
+# DO NOT OVERRIDE this PHP microgenerator section with autogenerated rules.
 ##############################################################################
 load(
     "@com_google_googleapis_imports//:imports.bzl",
-    "php_gapic_assembly_pkg",
-    "php_gapic_library",
-    "php_grpc_library",
-    "php_proto_library",
+    php_gapic_assembly_pkg = "php_gapic_assembly_pkg2",
+    php_gapic_library = "php_gapic_library2",
+    php_grpc_library = "php_grpc_library2",
+    php_proto_library = "php_proto_library2",
 )
 
 php_proto_library(
@@ -228,10 +229,8 @@ php_grpc_library(
 
 php_gapic_library(
     name = "appengine_php_gapic",
-    src = ":appengine_proto_with_info",
-    gapic_yaml = "appengine_gapic.yaml",
+    srcs = [":appengine_proto_with_info"],
     grpc_service_config = "appengine_grpc_service_config.json",
-    package = "google.appengine.v1",
     service_yaml = "appengine_v1.yaml",
     deps = [
         ":appengine_php_grpc",

google/appengine/v1/appengine_gapic.yaml

@@ -1,5 +0,0 @@
-type: com.google.api.codegen.ConfigProto
-config_schema_version: 2.0.0
-language_settings:
-  php:
-    package_name: Google\Appengine\V1

google/appengine/v1beta/BUILD.bazel

@@ -119,11 +119,12 @@ py_grpc_library(
 
 ##############################################################################
 # PHP
+# DO NOT OVERRIDE this PHP microgenerator section with autogenerated rules.
 ##############################################################################
 load(
     "@com_google_googleapis_imports//:imports.bzl",
-    "php_grpc_library",
-    "php_proto_library",
+    php_grpc_library = "php_grpc_library2",
+    php_proto_library = "php_proto_library2",
 )
 
 php_proto_library(