Use OpenJDK version 8 rather than 7 in bash_profile

Change-Id: Ie8de65f2194feee578d4f4622e01cabb45445bbb
diff --git a/tools/dev/bash_profile b/tools/dev/bash_profile
index b78f5cd..453782b 100644
--- a/tools/dev/bash_profile
+++ b/tools/dev/bash_profile
@@ -11,8 +11,8 @@
         export JAVA_HOME=$(/usr/libexec/java_home -v 1.8)
     elif [ -d /usr/lib/jvm/java-8-oracle ]; then
         export JAVA_HOME="/usr/lib/jvm/java-8-oracle"
-    elif [ -d /usr/lib/jvm/java-7-openjdk-amd64 ]; then
-        export JAVA_HOME="/usr/lib/jvm/java-7-openjdk-amd64"
+    elif [ -d /usr/lib/jvm/java-8-openjdk-amd64 ]; then
+        export JAVA_HOME="/usr/lib/jvm/java-8-openjdk-amd64"
     fi
 fi