create: Support aliases (example: "rhel")

[garrett]

When searching for RHEL, there are no results. We should probably change this. 😉

While RHEL is the obvious one, I don't know what other aliases we'd want to support. So, this is really about supporting at least one alias: RHEL for "Red Hat Enterprise Linux". 😉

[jelly]

We don't need to alias (and should not): the osinfo contains the information as short-id:

osinfo-query --fields=short-id,version,eol-date os | grep rhel
 rhel-atomic-7.0      | 7.0      | 2020-08-06
 rhel-atomic-7.1      | 7.1      | 2020-08-06
 rhel-atomic-7.2      | 7.2      | 2020-08-06
 rhel-atomic-7.3      | 7.3      | 2020-08-06
 rhel-atomic-7.4      | 7.4      | 2020-08-06
 rhel-unknown         | unknown  |
 rhel2.1              | 2.1      | 2009-05-31
 rhel2.1.1            | 2.1.1    | 2009-05-31
 rhel2.1.2            | 2.1.2    | 2009-05-31
 rhel2.1.3            | 2.1.3    | 2009-05-31
 rhel2.1.4            | 2.1.4    | 2009-05-31
 rhel2.1.5            | 2.1.5    | 2009-05-31
 rhel2.1.6            | 2.1.6    | 2009-05-31
 rhel2.1.7            | 2.1.7    | 2009-05-31
 rhel3                | 3        | 2014-01-30

[garrett]

@jelly Perfect! That's even better; thanks! We should search on short IDs then too.