Provide a way to provide extra variables

[Alien2150]

• Make it possible to provide extra variables to different base-images
• This makes it also possible to unset TLS_CERT_* variables if needed

[Alien2150]

@masseybradley Here's another one :)

[masseybradley]

Not a fan of the variable name, prefer extraEnvVars (the standard followed by bitnami charts). This should be wrapped in e.g. {{- if .Values.extraEnvVars }} ... {{- end }} otherwise it makes passing extra environment variables a requirement, e.g. a slightly modified snippet from bitnami:

          env:
            # ...
            {{- if .Values.extraEnvVars }}
            {{- toYaml .Values.extraEnvVars | nindent 12 }}
            {{- end }}
          {{- if or .Values.extraEnvVarsCM .Values.extraEnvVarsSecret }}
          envFrom:
            {{- if .Values.extraEnvVarsCM }}
            - configMapRef:
                name: {{ .Values.extraEnvVarsCM }}
            {{- end }}
            {{- if .Values.extraEnvVarsSecret }}
            - secretRef:
                name: {{ .Values.extraEnvVarsSecret }}
            {{- end }}
          {{- end }}

[Parad0X]

Seems useful

[Alien2150]

Added the if @masseybradley