Issue 98 - Recover from load errors in agents
Issue 98 - Recover from load errors in agents

Add some exception handling in the agents class so that
mcollective doesnt just die should there be problems with
an agent.  It'll log an error level message with the
exception instead

Signed-off-by: R.I.Pienaar <ab8e595618bc5f23916675978911ffae75f50e81@devco.net>

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