Fedora-21 has openjdk-1.8.0 only

Fedora-21 does not have openjdk-1.7.0 it has only 1.8.0.

This change also fixing the no op statement in the configure.

Change-Id: I6012aeb17b8e8fafa37d48aa29482702fa3491fd
diff --git a/pkg/elasticsearch.sh b/pkg/elasticsearch.sh
index 15e1b2b..447596a 100755
--- a/pkg/elasticsearch.sh
+++ b/pkg/elasticsearch.sh
@@ -44,7 +44,7 @@
 
 function configure_elasticsearch {
     # currently a no op
-    ::
+    :
 }
 
 function start_elasticsearch {
@@ -78,7 +78,11 @@
         sudo dpkg -i ${FILES}/elasticsearch-${ELASTICSEARCH_VERSION}.deb
         sudo update-rc.d elasticsearch defaults 95 10
     elif is_fedora; then
-        is_package_installed java-1.7.0-openjdk-headless || install_package java-1.7.0-openjdk-headless
+        if [[ "$os_RELEASE" -ge "21" ]]; then
+            is_package_installed java-1.8.0-openjdk-headless || install_package java-1.8.0-openjdk-headless
+        else
+            is_package_installed java-1.7.0-openjdk-headless || install_package java-1.7.0-openjdk-headless
+        fi
         yum_install ${FILES}/elasticsearch-${ELASTICSEARCH_VERSION}.noarch.rpm
         sudo /bin/systemctl daemon-reload
         sudo /bin/systemctl enable elasticsearch.service