plugin: skip JSON lines that are not objects in the agent-output readers - #183

service-plugin: [{'pid': 2326, 'hook': True}, {'pid': 2328, 'hook': False}, {'pid': 2332, 'hook': True}, {'pid': 2345, 'hook': True}, {'pid': 2356, 'hook': True}, {'pid': 2358, 'hook': False}]

plugin: [{'pid': 2250, 'hook': True}, {'pid': 2252, 'hook': False}, {'pid': 2254, 'hook': True}, {'pid': 2256, 'hook': True}, {'pid': 2259, 'hook': True}]