fixed a namespace collision with the new StatsdWriter in heka/pipeline/inputs
Merge branch 'master' of github.com:mozilla-services/heka-mozsvc-plugins into HEAD
added some sentry tests and code for authentication
added get_signature and a testcase
added a send function to write out sentry messages
added a data_packet attribute to SentryMsg that contains the entire
UDP bytearray and updated the ZeroOutData and MakeData methods to
match
misc fixes to get tests working again
Merge branch 'vng/add_sentry' of github.com:crankycoder/heka-mozsvc-plugins into vng/add_sentry

updated import paths to use new layout structure for heka-build
fixed invalid signatures with PrepOutData to fix a missing timeout
argument
changed outData to a pointer to SentryMsg so full stack almost works
re-enabled the actual network write and tested against a live sentry
server
refactored the header computation to not use a map anymore
renamed SentryOutWriter to SentryOutput
switched to using a proper writer interface
dropped DSN configuration settings
got the map of hosts->udp sockets setup
added ResolveAddr calls and updated the Dial calls to use DialUDP
refactored compute_headers to be a method of SentryMsg
got rid of some more temporary variables
* got rid of global struct
* got rid of config struct
* renamed compute_headers to compute_auth_headers