RS-322: Unify uninstall commands

[vikin91]

This PR is a follow-up to the following tickets:

• https://stack-rox.atlassian.net/browse/RS-239
• https://stack-rox.atlassian.net/browse/RS-301

It unifies the command used to uninstall undesired packages from the Docker image.
The unified command was proposed as rpm --verbose -e --nodeps $(rpm -qa curl '*rpm*' '*dnf*' '*libsolv*' '*hawkey*' 'yum*') with exception for scanner to not remove rpm.

Additionally, it was discussed in Slack (link to the discussion in the ticket https://stack-rox.atlassian.net/browse/RS-322) that we should not remove subscription-manager as it cannot be used to install potentially malicious components.

How tested

Did docker build and docker run afterwards and manually confirmed that package managers are removed but rpm and subscription-manager kept.

Unable to build this image locally

➜ make scanner-image
env: Studio: No such file or directory
...
env: Studio: No such file or directory
make: *** [scanner-image-builder] Error 127

so I trust that CI would complain if, for example, rpm binary would be missing.

[msugakov]

LGTM.
I recommend getting an approval from @RTann and/or @connorgorman before merging.

[RTann]

When do we want to have this merged? I plan on cutting a new scanner release today, but if this needs to go into 67, then I will wait

[RTann]

When do we want to have this merged? I plan on cutting a new scanner release today, but if this needs to go into 67, then I will wait

This was answered on Slack. It is not a blocker for 67, so I will still cut the release today