Increase .travis.yml consistency between repos

- aspnet/Universe#349
- minimize `dotnet` setup time; no need for caching
- build with `--quiet`
- `KOREBUILD_TEST_DNXCORE` env variable isn't used anymore
- no need for libuv v1.4.2 w/ current Kestrel packages
- no need for icu4c w/ current `dotnet` builds

.travis.yml

@@ -10,18 +10,11 @@ addons:
     - libssl-dev
     - libunwind8
     - zlib1g
-before_install:
-  - if test "$TRAVIS_OS_NAME" == "osx"; then brew update; brew install icu4c; brew install openssl; ln -s /usr/local/opt/openssl/lib/libcrypto.1.0.0.dylib /usr/local/lib/; ln -s /usr/local/opt/openssl/lib/libssl.1.0.0.dylib /usr/local/lib/; fi
 env:
-  - KOREBUILD_TEST_DNXCORE=true NO_PARALLEL_TEST_PROJECTS=E2ETests
-install:
-  - curl -sSL https://github.com/libuv/libuv/archive/v1.4.2.tar.gz | tar zxfv - -C /tmp && cd /tmp/libuv-1.4.2/
-  - sh autogen.sh
-  - ./configure --prefix=$HOME/libuvinstall
-  - make
-  - make install
-  - export LD_LIBRARY_PATH="$HOME/libuvinstall/lib"
-  - cd $OLDPWD
+  global:
+    - DOTNET_SKIP_FIRST_TIME_EXPERIENCE: true
+    - DOTNET_CLI_TELEMETRY_OPTOUT: 1
+    - NO_PARALLEL_TEST_PROJECTS=E2ETests
 mono:
   - 4.0.5
 os:
@@ -34,5 +27,7 @@ branches:
     - release
     - dev
     - /^(.*\/)?ci-.*$/
+before_install:
+  - if test "$TRAVIS_OS_NAME" == "osx"; then brew update; brew install openssl; ln -s /usr/local/opt/openssl/lib/libcrypto.1.0.0.dylib /usr/local/lib/; ln -s /usr/local/opt/openssl/lib/libssl.1.0.0.dylib /usr/local/lib/; fi
 script:
-  - ./build.sh verify
+  - ./build.sh --quiet verify