Removing Tomcat build lock

[smalenfant]

What does this PR (Pull Request) do?

This removes the restrictions imposed in the past to "lock in" the Tomcat release for Traffic Router. This has been quite a bit of a problem in the past in production when downgrading/upgrading TR (rollback). We don't compile nor we change the Tomcat code. There shouldn't be a need for this except for having a required version installed.

There has been compatibility issues in the past. All code should be tested in the lab before going to production.

This will also allow to upgrade Tomcat in the field without recompiling Traffic Router.

• This PR fixes is not related to any Issue

Which Traffic Control components are affected by this PR?

• Traffic Router

What is the best way to verify this PR?

Making sure Traffic Router install and starts properly

If this is a bug fix, what versions of Traffic Control are affected?

This is not a bug

The following criteria are ALL met by this PR

• This PR includes tests OR I have explained why tests are unnecessary
• This PR includes documentation OR I have explained why documentation is unnecessary
• This PR includes an update to CHANGELOG.md OR such an update is not necessary
• This PR includes any and all required license headers
• This PR DOES NOT FIX A SERIOUS SECURITY VULNERABILITY (see the Apache Software Foundation's security guidelines for details)

Additional Information

None yet

[zrhoffman]

Notes (mainly for myself) about what this PR does:

Before this PR

[user@computer dir]$ rpm -qp --qf '%{release}\n' tomcat-9.0.43-1.3526335f.el8.x86_64.rpm
1.3526335f.el8

After this PR

[user@computer dir]$ rpm -qp --qf '%{release}\n' tomcat-9.0.43-1.el8.noarch.rpm
1.el8

[zrhoffman]

All of these changes look fine, it just needs a changelog entry.