Increase .travis.yml consistency between repos

- aspnet/Universe#349
- minimize `dotnet` setup time; no need for caching
- no need for libuv v1.4.2 w/ current Kestrel packages

.travis.yml

@@ -10,14 +10,10 @@ addons:
     - libssl-dev
     - libunwind8
     - zlib1g
-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
+env:
+  global:
+    - DOTNET_SKIP_FIRST_TIME_EXPERIENCE: true
+    - DOTNET_CLI_TELEMETRY_OPTOUT: 1
 mono:
   - 4.0.5
 os: