This ignores /sbin and /bin paths then they are symlinks and avoids
misleading messages being printed when building stage2 and rescue

The list already contains /sbin and /bin which are just symlinks to the
above, but the order is different for / vs. /usr.

Due to the symlinks we always prefer sbin over bin anyway, so this change
doesn't technically change anything but does clarify things

The main change here is not remounting a fresh /run. Dracut does this
for us and we actually need to keep this one as the initial udev
database (when udev is started by dracut) is stored here and thus
mounting an empty fs could see us lose some metadata.

We no longer touch the /bin, /sbin or /lib[64] symlinks as these are
already relative symlinks into /usr and simply bind mounting /usr is
enough.

needed in order to pinpoint & fix:

Backslash found where operator expected at -e line 2, near ";}continue{print or die qq(-p destination: $!\"
       (Missing operator before \?)
Final $ should be \$ or $name at -e line 1, within string
syntax error at -e line 2, near ";}continue{print or die qq(-p destination: $!"
  (Might be a runaway multi-line !! string starting on line 1)
Execution of -e aborted due to compilation errors.

(see next commit)

previous fix for mga#9326 was incomplete in that draklive's auto-install
would still have broke with a remote repositery (which we don't use but
it's better to have all cases cornered for the sake of it)