added exception handling for the device curl call.
Merge pull request #442 from subh007/master

added exception handling for the device curl call in the circuitpusher app.
added override for port value in FallbackCCProvider

amend to PR #443
Update Cluster.java

Removed redundant code that added new link set mappings to the instance hashmap.
Merge pull request #443 from akoshibe/fallback-port

added override for port value in FallbackCCProvider
Merge pull request #445 from Rakurai/patch-1

Update Cluster.java
Merge remote-tracking branch 'upstream/master'