Merge branch 'master' into fixes

.travis.yml

@@ -1,20 +1,23 @@
 language: objective-c
-osx_image: xcode7.2
+osx_image: xcode7.3
 env:
   global:
     - CONFIG=opt
     - TEST=objc
     - JOBS=1
 before_install:
+  - pod --version
+  - gem uninstall cocoapods -a
+  - gem install cocoapods -v '1.0.0'
+  - pod --version
   - brew install gflags
-  # Pod install does this too, but we don't want the output.
-  - pod repo update --silent
+  - pushd third_party/protobuf
+  - git checkout v3.0.0-beta-3
+  - popd
 install:
   - make grpc_objective_c_plugin
   - pushd src/objective-c/tests
-  # Needs to be verbose, or otherwise OpenSSL's prepare_command makes Travis
-  # time out:
-  - pod install --verbose
+  - pod install
   - popd
 before_script:
   - make interop_server
@@ -27,6 +30,6 @@ xcode_scheme:
   - InteropTestsLocalCleartext
   # TODO(jcanizales): Investigate why they time out:
   # - InteropTestsRemote
-xcode_sdk: iphonesimulator9.2
+xcode_sdk: iphonesimulator9.3
 notifications:
   email: false