Changed KARAF_HOME to KARAF_ROOT as it was conflicting with KARAF's own and emitting annoying warnings.

Change-Id: I982701bd1ae9ecbb3c354cddf2f765b9569b02b9
diff --git a/tools/dev/bash_profile b/tools/dev/bash_profile
index 15f6389..a10b7f9 100644
--- a/tools/dev/bash_profile
+++ b/tools/dev/bash_profile
@@ -19,13 +19,13 @@
 export MAVEN=${MAVEN:-~/Applications/apache-maven-3.2.2}
 
 export KARAF_VERSION=${KARAF_VERSION:-3.0.2}
-export KARAF_HOME=${KARAF:-~/Applications/apache-karaf-$KARAF_VERSION}
-export KARAF_LOG=$KARAF_HOME/data/log/karaf.log
+export KARAF_ROOT=${KARAF_ROOT:-~/Applications/apache-karaf-$KARAF_VERSION}
+export KARAF_LOG=$KARAF_ROOT/data/log/karaf.log
 
 # Setup a path
 export PATH="$PATH:$ONOS_ROOT/tools/dev/bin:$ONOS_ROOT/tools/test/bin"
 export PATH="$PATH:$ONOS_ROOT/tools/build"
-export PATH="$PATH:$MAVEN/bin:$KARAF_HOME/bin"
+export PATH="$PATH:$MAVEN/bin:$KARAF_ROOT/bin"
 
 # Convenience utility to warp to various ONOS source projects
 # e.g. 'o api', 'o dev', 'o'