Fixed problems with os_meta_info.sh and setup.sh

Setup.sh added:
install curl before it being called

os_meta_info.sh fixed:
Ubuntu problem when multiple /etc/*-release files exist or when no
/etc/*-release file exist.
Update os_meta_info.sh

changed from /etc/issue.net to /etc/issue
Merge pull request #8 from PROM3TH3U5/Ubuntu-setup-noPip

Fixed problems with os_meta_info.sh and setup.sh