fixes #46
fixes #45

GM sends heartbeat to GL
When using cassandra GM sends monitoring datas directly to the cassandra
cluster

LC sends heartbeat to GM
When using cassandra LC sends monitoring datas directly to the cassandra
cluster

M

Fixes the GM drop issue when a GM fails.

M
Merge pull request #47 from msimonin/sendDirectlyMonitoring

Send directly monitoring
Clean bootstrap Compute Resource
(remove compute resource : will become a standalone service)

M
Merge pull request #48 from msimonin/cleanBootstrapResource

Clean bootstrap resource