concurrent helmfile template

[rochana-atapattu]

#900
this starts templating helmfiles in the first helmfile concurrently

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[rochana-atapattu]

ignore

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

No Coverage information
0.0% Duplication

[rochana-atapattu]

helmfiles.GatherHelmfiles(o.Helmfile, o.Dir) return a duplicated list of helmfiles. Is there a functionality I can use to filter the duplicated?