record cannot use elasticsearch index name type project_full: record is missing kubernetes field

Issue

• The operation logs, are written well, however, we didn't see any application log.
  Reading the fluent logs, we see that this message is repeated a lot of times and all the messages are like this :

[error]: record cannot use elasticsearch index name type project_full: record is missing kubernetes field

• Lots of orphaned indices

health status index                                            pri rep docs.count docs.deleted store.size pri.store.size 
green  open   .orphaned.2018.03.11                               1   0       2318            0          0              0 
green  open   .kibana.f06c2de9f8edacbf8d8c80d7c5124d865484d701   1   0          2            0          0              0 
green  open   .orphaned.2018.03.10                               1   0       3259            0          0              0 
green  open   .orphaned.2018.03.15                               1   0    9938436            0       5391           5391 
green  open   .orphaned.2018.03.14                               1   0    9159668            0       6411           6411 
green  open   .orphaned.2018.03.13                               1   0      17209            0          3              3 
green  open   .orphaned.2018.03.12                               1   0      20202            0          3              3 
green  open   .searchguard.logging-es-data-master-lui0t6o3       1   1          5            1          0              0 
green  open   fluentd                                            1   0      34750            0         25             25 
green  open   .kibana.d8c8066e1bac5ae4c4e8677a7c09c49cedb12e7a   1   0          2            0          0              0 
green  open   .searchguard.logging-es-data-master-5rpso23p       1   2          5            1          0              0 
green  open   .searchguard.logging-es-data-master-w28w7g3s       1   1          5            1          0              0 
green  open   .kibana                                            1   0          1            0          0              0 
green  open   .orphaned.2018.03.19                               1   0    3590307            0        810            810 
green  open   .orphaned.2018.03.18                               1   0    5058668            0       1106           1106 
green  open   .orphaned.2018.03.17                               1   0    5115571            0       1132           1132 
green  open   .orphaned.2018.03.16                               1   0    7506136            0       2845           2845 
green  open   .orphaned.2018.03.09                               1   0       3520            0          0              0

• Fluentd index causing strange message with a lot of slashes or backslashes

record cannot use elasticsearch index name type project_full: record is missing kubernetes field: {"message"=>"\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\...