Error setting port values after version upgrade

After upgrading our Helm chart from `4.12.1` to `4.12.2` we get an error with the setting of the udp port. After the upgrade, this is set via the helpers function, but this leads to the following error:

our actual config
```
config:
udp:
enabled: true
```

error
```
install.go:200: [debug] Original chart version: ""
install.go:217: [debug] CHART PATH: /Users/nevado/git/brainbits/github/influxdb/helm-charts/charts/influxdb

Error: template: influxdb/templates/statefulset.yaml:77:28: executing "influxdb/templates/statefulset.yaml" at : error calling include: template: influxdb/templates/_helpers.tpl:87:64: executing "influxdb.udpPortNumber" at <"bind-address">: invalid value; expected string
helm.go:84: [debug] template: influxdb/templates/statefulset.yaml:77:28: executing "influxdb/templates/statefulset.yaml" at : error calling include: template: influxdb/templates/_helpers.tpl:87:64: executing "influxdb.udpPortNumber" at <"bind-address">: invalid value; expected string
```

helpers function
```
{{- define "influxdb.udpPortNumber" -}}
{{ default 8089 (regexReplaceAll ":([0-9]+)" (index .Values "config" "udp" "bind-address") "${1}") }}
{{- end -}}
```

The problem can be fixed with the following snippet. But this is only a temporary solution, because the default value is set wrong by the helpers functions.

temporary solution
```
config:
udp:
enabled: true
bind-address: ":8089"
```

Another solution: add `| quote ` in the helpers function (supplementary for all ports):
```

{{- define "influxdb.udpPortNumber" -}}
{{ default 8089 (regexReplaceAll ":([0-9]+)" (index .Values "config" "udp" "bind-address" | quote ) "${1}") }}
{{- end -}}
```

Start in charts/influxdb/templates/_helpers.tpl, especially influxdb.udpPortNumber, and inspect its use from charts/influxdb/templates/statefulset.yaml. Run Helm template with config.udp.enabled set and no bind-address, then verify the chart renders the default UDP port and handles the other port helpers consistently.

Written by the indexing model from the issue text.