Significant changes and improvements + adding custom dashboards for github pages

[camilamacedo86]

Description

This PR address significant changes. After it gets merged audit will start to display in the index.html custom dashboards in HTML which are generated using as a source of data the results of the reports made to check all bundles of the index images and output in JSON format.

e.g.:

audit-tool dashboard deprecate-apis --file=/Users/camilamacedo/go/src/github.com/operator-framework/audit-1/testdata/reports/redhat_redhat_operator_index/bundles_registry.redhat.io_redhat_redhat_operator_index_v4.8_2021-06-02.json --output-path=/Users/camilamacedo/go/src/github.com/operator-framework/audit-1/testdata/reports/redhat_redhat_operator_index/dashboard

Also, we are here pushing some fixes, cleanups and improvements.

Details

• add a new command to generate custom dashboards in HTML created by using the JSON files,
• move bundles/channels/packages reports to be sub-command of the index (see the readme changes). Note that is also motivated by Can this be run as a step in openshift CI during the bundle install #31. The idea is to allow perform the same checks and reports per bundle and not only per index. Use audit-tool index [bundles/packages/channels] instead of audit-tool [bundles/packages/channels]
• start to look for the kinds which were deprecated
• cleanup columns reports based on feedbacks (see the bundles reports). Mainly we removed what is not bringing so much value such as the maintainer's name and links
• upgrade to go 1.16
• add new column info to know what are the bundles which are using custom scorecard test
• re-gen all reports using 4.8 index images
• add to the testdata new reports over bundles from 4.6,4.7 indexes images
• add a new hack to generate the index.html
• remove the backport reports in the testdata and into the hack. We will no longer need to re-gen them.

[coveralls]

Pull Request Test Coverage Report for Build 942491371

• 0 of 581 (0.0%) changed or added relevant lines in 11 files are covered.
• 16 unchanged lines in 6 files lost coverage.
• Overall coverage decreased (-0.3%) to 1.008%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/actions/run_validators.go	0	6	0.0%
pkg/reports/channels/data.go	0	8	0.0%
pkg/actions/get_bundle.go	0	14	0.0%
pkg/reports/bundles/data.go	0	24	0.0%
pkg/helpers.go	0	25	0.0%
pkg/reports/bundles/columns.go	0	26	0.0%
pkg/reports/packages/report.go	0	67	0.0%
pkg/reports/packages/data.go	0	68	0.0%
pkg/actions/run_scorecard.go	0	72	0.0%
pkg/removed_apis.go	0	121	0.0%

Files with Coverage Reduction	New Missed Lines	%
pkg/actions/get_bundle.go	1	0%
pkg/helpers.go	1	0%
pkg/reports/packages/data.go	1	0%
pkg/reports/bundles/data.go	2	13.95%
pkg/actions/run_scorecard.go	4	0%
pkg/reports/packages/report.go	7	0%

Totals
Change from base Build 849873353:	-0.3%
Covered Lines:	18
Relevant Lines:	1786

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💛 - Coveralls