ONAP deployment fails with error:

1. helm install local/onap --name prod --namespace onap -f ~/global-values.yaml
   NAME: prod
   Error: getting deployed release "prod": release: "prod" not found

Tiller log:

[tiller] 2018/04/01 10:51:33 preparing install for prod
[storage] 2018/04/01 10:51:33 getting release history for "prod"
[tiller] 2018/04/01 10:51:33 rendering onap chart using values
[tiller] 2018/04/01 10:51:39 performing install for prod
[tiller] 2018/04/01 10:51:39 executing 0 pre-install hooks for prod
[tiller] 2018/04/01 10:51:39 hooks complete for pre-install prod
[storage] 2018/04/01 10:51:39 getting release history for "prod"
[storage] 2018/04/01 10:51:39 creating release "prod.v1"
[storage/driver] 2018/04/01 10:51:39 create: failed to create: ConfigMap "prod.v1" is invalid: data: Too long: must have at most 1048576 characters
[tiller] 2018/04/01 10:51:39 warning: Failed to record release prod: ConfigMap "prod.v1" is invalid: data: Too long: must have at most 1048576 characters
[kube] 2018/04/01 10:51:39 building resources from manifest
[kube] 2018/04/01 10:51:40 creating 261 resource(s)
[tiller] 2018/04/01 10:51:41 executing 0 post-install hooks for prod
[tiller] 2018/04/01 10:51:41 hooks complete for post-install prod
[storage] 2018/04/01 10:51:41 updating release "prod.v1"
[storage/driver] 2018/04/01 10:51:42 update: failed to update: configmaps "prod.v1" not found
[tiller] 2018/04/01 10:51:42 warning: Failed to update release prod: configmaps "prod.v1" not found
[storage] 2018/04/01 10:51:42 getting last revision of "prod"
[storage] 2018/04/01 10:51:42 getting release history for "prod"

Seems that some chart is now larger that 1Mb.

Environment:

Rancher 1.6.14, helm 2.8.2 (tried with 2.7.1, same result, hoped helm upgrade would help, no such luck).