Add manifest_change checks to each factory

buildbot/master/master.cfg

@@ -206,6 +206,7 @@ linux_rel_factory = create_servo_factory([
     steps.ShellCommand(command=["gzip", "test-css.log"], env=linux_headless_env),
     steps.Compile(command=["./mach", "build-cef", "--release"], env=linux_headless_env),
     steps.ShellCommand(command=["bash", "./etc/ci/lockfile_changed.sh"], env=linux_headless_env),
+    steps.ShellCommand(command=["bash", "./etc/ci/manifest_changed.sh"], env=linux_headless_env),
 ])
 
 task_limited_test_env = dict({'RUST_TEST_TASKS': '1'}, **mac_test_env)
@@ -220,6 +221,7 @@ mac_rel_wpt_factory = create_servo_factory([
     steps.ShellCommand(command=["pkill", "-x", "servo"], decodeRC={0: SUCCESS, 1: SUCCESS}),
     steps.ShellCommand(command=["gzip", "test-wpt.log"], env=mac_test_env),
     steps.ShellCommand(command=["bash", "./etc/ci/lockfile_changed.sh"], env=mac_test_env),
+    steps.ShellCommand(command=["bash", "./etc/ci/manifest_changed.sh"], env=mac_test_env),
 ])
 
 mac_dev_ref_unit_factory = create_servo_factory([
@@ -229,6 +231,7 @@ mac_dev_ref_unit_factory = create_servo_factory([
     steps.ShellCommand(command=["./mach", "test-unit"], env=mac_test_env),
     steps.Compile(command=["./mach", "build-cef"], env=mac_test_env),
     steps.ShellCommand(command=["bash", "./etc/ci/lockfile_changed.sh"], env=mac_test_env),
+    steps.ShellCommand(command=["bash", "./etc/ci/manifest_changed.sh"], env=mac_test_env),
 ])
 
 mac_rel_css_factory = create_servo_factory([
@@ -239,6 +242,7 @@ mac_rel_css_factory = create_servo_factory([
     steps.ShellCommand(command=["pkill", "-x", "servo"], decodeRC={0: SUCCESS, 1: SUCCESS}),
     steps.ShellCommand(command=["gzip", "test-css.log"], env=mac_test_env),
     steps.ShellCommand(command=["bash", "./etc/ci/lockfile_changed.sh"], env=mac_test_env),
+    steps.ShellCommand(command=["bash", "./etc/ci/manifest_changed.sh"], env=mac_test_env),
 ])
 
 android_compile_env = dict({'ANDROID_SDK': '/home/servo/android-sdk-linux/',
@@ -249,6 +253,7 @@ android_compile_env = dict({'ANDROID_SDK': '/home/servo/android-sdk-linux/',
 android_factory = create_servo_factory([
     steps.Compile(command=["./mach", "build", "--android", "--dev"], env=android_compile_env),
     steps.ShellCommand(command=["bash", "./etc/ci/lockfile_changed.sh"], env=android_compile_env),
+    steps.ShellCommand(command=["bash", "./etc/ci/manifest_changed.sh"], env=android_compile_env),
 ])
 
 android_nightly_factory = create_servo_factory([
@@ -269,6 +274,7 @@ gonk_compile_env = dict({'ANDROID_SDK': '/home/servo/android-sdk-linux/',
 gonk_factory = create_servo_factory([
     steps.Compile(command=["./mach", "build-gonk"], env=gonk_compile_env),
     steps.ShellCommand(command=["bash", "./etc/ci/lockfile_changed.sh"], env=gonk_compile_env),
+    steps.ShellCommand(command=["bash", "./etc/ci/manifest_changed.sh"], env=gonk_compile_env),
 ])
 
 doc_factory = create_servo_factory([