Fix traceback when ID declaration is numeric

Fixes #15913
Merge pull request #16003 from terminalmage/issue15913-2014.1

Fix traceback when ID declaration is numeric (2014.1 branch)
Update to latest bootstrap stable release v2014.09.24

* Fixed salt tag version matching to also accept, for example, v2014.7. saltstack/salt-bootstrap#464
* Fix the EPEL 7 URL since epel-release is now 7.2
Merge pull request #16096 from s0undt3ch/2014.1

[2014.1] Update to latest bootstrap stable release v2014.09.24
Update to latest stable bootstrap script v2014.09.25

* Properly detect Amazon AMI's >= 2014.9. saltstack/salt-bootstrap#468
Merge pull request #16142 from s0undt3ch/hotfix/bootstrap-script-2014.1

Update to latest stable bootstrap script v2014.09.25