message: Add reclient shadow builders to mb_config.pyl
  Cr-Commit-Position: refs/heads/main@{#37917}
diff: # Android
  'Android32 (M Nexus5X)': 'android_release_bot_arm',
  'Android32 (M Nexus5X)(dbg)': 'android_debug_static_bot_arm',
  + 'Android32 (M Nexus5X)(reclient)': 'android_release_bot_arm_reclient',
  'Android32 (more configs)': {
  'bwe_test_logging': 'bwe_test_logging_android_arm',
  'dummy_audio_file_devices_no_protobuf':
  'Mac64 Builder': 'pure_release_bot_x64',
  'Mac64 Debug': 'debug_bot_x64',
  'Mac64 Release': 'release_bot_x64',
  + 'Mac64 Release (reclient)': 'release_bot_x64_reclient',
  'MacARM64 M1 Release': 'release_bot_arm64',
  'MacArm64 Builder': 'release_bot_arm64',
  'Win64 ASan': 'win_asan_clang_release_bot_x64',
  'Win64 Debug (Clang)': 'win_clang_debug_bot_x64',
  'Win64 Release (Clang)': 'win_clang_release_bot_x64',
  + 'Win64 Release (Clang)(reclient)': 'win_clang_release_bot_x64_reclient',
  # iOS
  'iOS64 Debug': 'ios_debug_bot_arm64',
  'iOS64 Release': 'ios_release_bot_arm64',
  + 'iOS64 Release (reclient)': 'ios_release_bot_arm64_reclient',
  'iOS64 Sim Debug (iOS 12)': 'ios_debug_bot_x64',
  'iOS64 Sim Debug (iOS 13)': 'ios_debug_bot_x64',
  'iOS64 Sim Debug (iOS 14)': 'ios_debug_bot_x64',
  'android_pure_release_bot_arm64': ['android', 'pure_release_bot', 'arm64'],
  'android_release_bot_arm': ['android', 'release_bot', 'arm'],
  'android_release_bot_arm64': ['android', 'release_bot', 'arm64'],
  + 'android_release_bot_arm_reclient': ['android', 'release_bot_reclient', 'arm'],
  'android_release_bot_x64': ['android', 'release_bot', 'x64'],
  'android_release_bot_x86': ['android', 'release_bot', 'x86'],
  'asan_lsan_clang_release_bot_x64':
  'ios', 'release_bot', 'arm64', 'ios_code_signing_identity_description',
  'xctest'
  ],
  - 'ios_release_bot_arm64':
  - ['ios', 'release_bot', 'arm64', 'no_ios_code_signing', 'xctest'],
  + 'ios_release_bot_arm64': [
  + 'ios', 'release_bot', 'arm64', 'no_ios_code_signing', 'xctest',
  + ],
  + 'ios_release_bot_arm64_reclient': [
  + 'ios', 'release_bot_reclient', 'arm64', 'no_ios_code_signing', 'xctest',
  + ],
  'libfuzzer_asan_release_bot_x64': [
  'libfuzzer', 'asan', 'optimize_for_fuzzing', 'openh264',
  'pure_release_bot', 'x64'
  'release_bot',
  'x64',
  ],
  + 'win_clang_release_bot_x64_reclient': [
  + 'clang',
  + 'openh264',
  + 'release_bot_reclient',
  + 'x64',
  + ],
  'win_clang_release_bot_x86': [
  'clang',
  'openh264',
  