The PSMDB chart limits the app name to 21 characters

[yonigolob1]

For some reason, the app name defined in the _helpers file under the "psmdb-database.fullname" variable is always truncated to 21 characters, even though the comment indicates that it should truncate to 63. Is there a specific reason for this limitation?

_helpers

{{/*
Create a default fully qualified app name.
We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
If release name contains chart name it will be used as a full name.
*/}}
{{- define "psmdb-database.fullname" -}}
{{- if .Values.fullnameOverride -}}
{{- .Values.fullnameOverride | trunc 21 | trimSuffix "-" -}}
{{- else -}}
{{- $name := default .Chart.Name .Values.nameOverride -}}
{{- if contains $name .Release.Name -}}
{{- .Release.Name | trunc 21 | trimSuffix "-" -}}
{{- else -}}
{{- printf "%s-%s" .Release.Name $name | trunc 21 | trimSuffix "-" -}}
{{- end -}}
{{- end -}}
{{- end -}}