[sqlserver] Refactor sqlserver database metrics

[lu-zhengda]

What does this PR do?

This PR migrates following dynamic metrics to database_metrics for better maintainability and testability.

• SQLServer AlwaysOn metrics
• SQLServer FCI metrics
• SQLServer file stats metrics
• SQLServer primary log shipping metrics
• SQLServer secondary log shipping metrics
• SQLServer server state metrics
• SQLServer tempdb file space usage metrics
• SQLServer index usage metrics
• SQLServer database index fragmentation metrics (increase default collection interval to 5 mins)
• SQLServer os tasks metrics
• SQLServer master files metrics
• SQLServer database files metrics
• SQLServer database stats metrics
• SQLServer database backup metrics (increase default collection interval to 5 mins)
• SQLServer os schedulers metrics
• SQLServer database replication stats metrics
• SQLServer availability replicas metrics
• SQLServer availability groups metrics

Motivation

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Add the qa/skip-qa label if the PR doesn't need to be tested during QA.
• If you need to backport this PR to another branch, you can add the backport/<branch-name> label to the PR and it will automatically open a backport PR once this one is merged

[codecov]

Codecov Report

Attention: Patch coverage is 97.45989% with 19 lines in your changes missing coverage. Please review.

Project coverage is 88.58%. Comparing base (6cd3ac6) to head (5c1e9d5).
Report is 1 commits behind head on master.

Additional details and impacted files

Flag	Coverage Δ
activemq	?
cassandra	?
hive	?
hivemq	?
ignite	?
jboss_wildfly	?
kafka	?
presto	?
solr	?
sqlserver	91.14% <97.45%> (+11.39%)	⬆️

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