fixes #5771 - lifecycle-environment - fix the behavir of prior environment

In order to see this fix for environments that do not have
a prior (e.g. Library), the following hammer-cli change
will be needed:

https://github.com/theforeman/hammer-cli/pull/107
Refs #5821 - initial CLI support for the capsule commands
Refs #5821 - address PR issues
Merge pull request #172 from bbuckingham/issue-5771

fixes #5771 - lifecycle-environment - fix the behavir of prior environment
Merge pull request #173 from iNecas/capsule

Refs #5821 - initial CLI support for the capsule commands
Fixes #5893 - Fixes product info's content

Hammer product info was not displaying the content collection due to
the key being changed from 'productContent' to 'product_content'
Merge pull request #176 from dustint-rh/product_info_content

Fixes #5893 - Fixes product info's content