[SPARK-2702][Core] Upgrade Tachyon dependency to 0.5.0

Author: Haoyuan Li <haoyuan@cs.berkeley.edu>

Closes #1651 from haoyuan/upgrade-tachyon and squashes the following commits:

6f3f98f [Haoyuan Li] upgrade tachyon to 0.5.0

core/pom.xml

@@ -192,8 +192,8 @@
     </dependency>
     <dependency>
       <groupId>org.tachyonproject</groupId>
-      <artifactId>tachyon</artifactId>
-      <version>0.4.1-thrift</version>
+      <artifactId>tachyon-client</artifactId>
+      <version>0.5.0</version>
       <exclusions>
         <exclusion>
           <groupId>org.apache.hadoop</groupId>

make-distribution.sh

@@ -128,7 +128,7 @@ if [[ ! "$JAVA_VERSION" =~ "1.6" && -z "$SKIP_JAVA_TEST" ]]; then
   if [[ ! $REPLY =~ ^[Yy]$ ]]; then
     echo "Okay, exiting."
     exit 1
-  fi 
+  fi
 fi
 
 if [ "$NAME" == "none" ]; then
@@ -173,7 +173,7 @@ cp $FWDIR/examples/target/scala*/spark-examples*.jar "$DISTDIR/lib/"
 
 # Copy example sources (needed for python and SQL)
 mkdir -p "$DISTDIR/examples/src/main"
-cp -r $FWDIR/examples/src/main "$DISTDIR/examples/src/" 
+cp -r $FWDIR/examples/src/main "$DISTDIR/examples/src/"
 
 if [ "$SPARK_HIVE" == "true" ]; then
   cp $FWDIR/lib_managed/jars/datanucleus*.jar "$DISTDIR/lib/"
@@ -199,7 +199,7 @@ cp -r "$FWDIR/ec2" "$DISTDIR"
 
 # Download and copy in tachyon, if requested
 if [ "$SPARK_TACHYON" == "true" ]; then
-  TACHYON_VERSION="0.4.1"
+  TACHYON_VERSION="0.5.0"
   TACHYON_URL="https://github.com/amplab/tachyon/releases/download/v${TACHYON_VERSION}/tachyon-${TACHYON_VERSION}-bin.tar.gz"
 
   TMPD=`mktemp -d 2>/dev/null || mktemp -d -t 'disttmp'`