fix whitespace remove in postgresql configmap helm chart

[anon6789]

When setting a dedicated postgresql instance with the config.postgresURI value, there is no entry for clair.database.options.source in the configmap after helm deploy.

The if statement in configmap.yaml has two dashes "-". It turns out that the newline between source and the comment above is removed by the ending "-".

# PostgreSQL Connection string
# https://www.postgresql.org/docs/current/static/libpq-connect.html#LIBPQ-CONNSTRING
# This should be done using secrets or Vault, but for now this will also work
{{- if .Values.config.postgresURI -}}
source: "{{ .Values.config.postgresURI }}"

Generated yaml:

# PostgreSQL Connection string
# https://www.postgresql.org/docs/current/static/libpq-connect.html#LIBPQ-CONNSTRING
# This should be done using secrets or Vault, but for now this will also worksource: "postgres://clair:*********@psql.cloudsql.svc.cluster.local:5432/postgres?sslmode=disable"

The helm documentation says:

{{- (with the dash and space added) indicates that whitespace should be chomped left, while -}} means whitespace to the right should be consumed. Be careful! Newlines are whitespace!