Fix Debian service detection

* check_enabled now understands upstart (enough to
  check whether services start on boot)

* check_running now properly uses /usr/sbin/service
Resolve issue #130

* Modified spec/debian/commands_spec.rb to check for new commands
* Changed absolute paths to relative because #129
Merge pull request #147 from hayato1980/master

use 'env' to set PATH
Fix tests for env prefix
Bump up version
Remove specs for obsolete syntax
Remove matcher/be_default_gateway
Remove matcher/be_directory
Remove matcher/be_file
Remove obsolete syntax warning
Remmove serverspec/filter.It was needed for obsolete syntax of kernel parameter checking
Remove matcher/be_disabled and matcher/be_enabled
Remove matcher/be_enforcing and be_permissive
Fix be_executable
Fix be_running
Remove have_ip*
Fix be_resolvable
Remove have_uid and have_gid
Remove have_authorized_key, have_home_directory and have_login_shell
Remove be_user and be_group