[FLINK-3509] Update Hadoop minor versions to latest & sync travis and…

… release scripts

This closes #1713

.travis.yml

@@ -17,11 +17,11 @@ language: java
 matrix:
   include:
     - jdk: "oraclejdk8"
-      env: PROFILE="-Dhadoop.version=2.7.1 -Dscala-2.11 -Pinclude-yarn-tests -Dmaven.javadoc.skip=true"
+      env: PROFILE="-Dhadoop.version=2.7.2 -Dscala-2.11 -Pinclude-yarn-tests -Dmaven.javadoc.skip=true"
     - jdk: "oraclejdk8"
-      env: PROFILE="-Dhadoop.version=2.5.0 -Pinclude-yarn-tests -Dmaven.javadoc.skip=true"
+      env: PROFILE="-Dhadoop.version=2.6.3 -Pinclude-yarn-tests -Dmaven.javadoc.skip=true"
     - jdk: "openjdk7"
-      env: PROFILE="-Dhadoop.version=2.4.0 -Dscala-2.11 -Pinclude-yarn-tests"
+      env: PROFILE="-Dhadoop.version=2.4.1 -Dscala-2.11 -Pinclude-yarn-tests"
     - jdk: "oraclejdk7" # this uploads the Hadoop 2 build to Maven and S3
       env: PROFILE="-Dhadoop.version=2.3.0"
     - jdk: "openjdk7" # this uploads the Hadoop 1 build to Maven and S3

tools/create_release_files.sh

@@ -148,7 +148,8 @@ make_binary_release() {
   cd "${dir_name}"
   ./tools/change-scala-version.sh ${SCALA_VERSION}
 
-  $MVN clean package $FLAGS -DskipTests
+  # enable release profile here (to check for the maven version)
+  $MVN clean package $FLAGS -DskipTests -Prelease -Dgpg.skip
 
   cd flink-dist/target/flink-$RELEASE_VERSION-bin/
   tar czf "${dir_name}.tgz" flink-$RELEASE_VERSION
@@ -208,13 +209,13 @@ make_source_release
 make_binary_release "hadoop1" "-Dhadoop.profile=1" 2.10
 make_binary_release "hadoop2" "" 2.10
 make_binary_release "hadoop24" "-Dhadoop.version=2.4.1" 2.10
-make_binary_release "hadoop26" "-Dhadoop.version=2.6.0" 2.10
-make_binary_release "hadoop27" "-Dhadoop.version=2.7.0" 2.10
+make_binary_release "hadoop26" "-Dhadoop.version=2.6.3" 2.10
+make_binary_release "hadoop27" "-Dhadoop.version=2.7.2" 2.10
 
 make_binary_release "hadoop2" "" 2.11
 make_binary_release "hadoop24" "-Dhadoop.version=2.4.1" 2.11
-make_binary_release "hadoop26" "-Dhadoop.version=2.6.0" 2.11
-make_binary_release "hadoop27" "-Dhadoop.version=2.7.0" 2.11
+make_binary_release "hadoop26" "-Dhadoop.version=2.6.3" 2.11
+make_binary_release "hadoop27" "-Dhadoop.version=2.7.2" 2.11
 
 copy_data