fix: update cosi & harbor metadata fields

[kishankumarnutanix]

What problem does this PR solve?:
The category and the dependency field of metadata yaml of the cosi driver nutanix app and harbor app was set to empty array. However, we do not need dependency fields for either of the app and category needs to be general. Hence removing dependency field and adding category.
Slack Discussion Thread :- https://nutanix.slack.com/archives/C06A78Y063B/p1738775586636359?thread_ts=1738773226.964009&cid=C06A78Y063B

Which issue(s) does this PR fix?:

https://jira.nutanix.com/browse/NCN-105574

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Checklist

• If the PR adds a version bump, ensure there is no breaking change in Licensing model (or NA).
• If a chart is changed or app configuration is significantly changed, the chart version is correctly incremented (so that apps are not automatically upgraded from a previous version of DKP).

[coveralls]

Pull Request Test Coverage Report for Build 13163592124

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 51.703%

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Totals
Change from base Build 13159470805:	0.0%
Covered Lines:	167
Relevant Lines:	323

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💛 - Coveralls