Bump karaf from 3.0.5 to 3.0.8

Change-Id: Ic5bc130f5110f4ff9da6ec22d066a5dd3069288d
diff --git a/tools/dev/bash_profile b/tools/dev/bash_profile
index 7b599f4..e4c3372 100644
--- a/tools/dev/bash_profile
+++ b/tools/dev/bash_profile
@@ -18,7 +18,7 @@
 
 export MAVEN=${MAVEN:-~/Applications/apache-maven-3.3.9}
 
-export KARAF_VERSION=${KARAF_VERSION:-3.0.5}
+export KARAF_VERSION=${KARAF_VERSION:-3.0.8}
 export KARAF_ROOT=${KARAF_ROOT:-~/Applications/apache-karaf-$KARAF_VERSION}
 export KARAF_LOG=$KARAF_ROOT/data/log/karaf.log