[keycloakx] KC_HTTP_RELATIVE_PATH is empty

[Footur]

When the relative path is just "/" the suffix will be trimmed and the variable KC_HTTP_RELATIVE_PATH will be empty.

            {{- if .Values.http.relativePath }}
            - name: KC_HTTP_RELATIVE_PATH
              value: {{ tpl .Values.http.relativePath $ | trimSuffix "/" }}
            {{- end }}