<oo-install> Update package rake task support using local ose script

- add an environment variable to use local openshift.sh script
- make sure to dereference links when copying oo-install directory to
  tmp directory
- use working_branch for base build
more install script fixes

- fix spelling
- use parameter substitution for extracting district/nodes from district
  mapping instead of a subshell
- use extended brace expansion instead of seq