adding properties to package and channel

[akihikokuroda]

Signed-off-by: akihikokuroda akihikokuroda2020@gmail.com

Description of the change:

Add Properties to Channel and Package blob for FBC. They are preserved for the alpha render command.
The unit tests in render_test.go and declcfg_to_model_test.go are updated are updated.

Motivation for the change:
Closes #895
Reviewer Checklist

• Implementation matches the proposed design, or proposal is updated to match implementation
• Sufficient unit test coverage
• Sufficient end-to-end test coverage
• Docs updated or added to /docs
• Commit messages sensible and descriptive

[codecov]

Codecov Report

Merging #900 (c32e396) into master (c056ac1) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #900   +/-   ##
=======================================
  Coverage   52.07%   52.07%           
=======================================
  Files         103      103           
  Lines        9092     9092           
=======================================
  Hits         4735     4735           
  Misses       3449     3449           
  Partials      908      908           

Impacted Files	Coverage Δ
alpha/declcfg/declcfg.go	100.00% <ø> (ø)

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[joelanford]

/lgtm

[cdjohnson]

Built and tested against my own test catalog and it worked for me. Thanks!

[akihikokuroda]

/assign @njhale

[dinhxuanvu]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: akihikokuroda, dinhxuanvu

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