Refactor: gets to asset metadata no longer require grant >= manage

[Matte22]

This PR extends on PR #1270

The following functions no longer require an access level >= manage in order to retrieve asset metadata. They now will only require an access level of restricted.

• getAssetMetadata
• getAssetMetadataKeys
• getAssetMetadataValue

Tests under postman collection STIGMan OSS / GETs / Asset GET / {asset Id} / metadata were altered to account for these new access level rules. Some of the test data and assertions were altered also.

[sonarcloud[bot]]

Quality Gate passed for 'nuwcdivnpt_stig-manager-api'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud