sysv init scripts: fix == bashism

sysv init scripts: fix == bashism

test a == b is not available in e.g. dash.

Command(s) used for editing:

  q=\[\"\'\]
  operand="${q}?[$]?[a-zA-Z0-9_\?]+${q}?"  ## doesn't detect ${VAR}
  test_expr="(\[\s+${operand}\s+)==(\s+${operand}\s+\])"

  find . -type f -name '[SK][0-9][0-9]*' | \
     xargs sed -r -e "s@${test_expr}@\1=\2@g" -i

Signed-off-by: André Erdmann <dywi@mailerd.de>
Acked-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>