Shellcheck compliance
Shellcheck compliance

scripts/openvpn/pivpnDebug.sh
  * SC1090: ShellCheck can't follow non-constant source. Use a directive to specify location.
    * Disabled warning message
  * SC2154: <VariableName> is referenced but not assigned.
    * Disabled warning message
  * SC2086: Double quote to prevent globbing and word splitting.
    * Added double quotes
  * SC2207: Prefer mapfile or read -a to split command output (or quote to avoid splitting).
    * Added double quotes

pivpn/pivpn