feat(helm): new configuration options

[zbindenren]

Revamped Helm Chart

Following changes:

• remove namespace from values.yaml
• remove rbac fro values.yaml - installation of clusterrole is done depending on allow_unschedulable
• labels and label selectors via best practices
• appVersion updated to 1.7.0
• all environment variables are configurable via helm values

[coveralls]

Pull Request Test Coverage Report for Build 3386410292

• 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 77.718%

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Totals
Change from base Build 3368223944:	0.0%
Covered Lines:	436
Relevant Lines:	561

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💛 - Coveralls

[djboris9]

lgtm :fire: