feat: adding support for nodeSelector with runtime-enforcer debugger deployment

[venkateshjayagopal]

What this PR does / why we need it:

Need support for nodeSelector attribute for debugger deployment

Which issue(s) this PR fixes

fixes #548

Special notes for your reviewer:

Checklist:

• squashed commits into logical changes
• includes documentation
• adds unit tests
• adds or updates e2e tests

[venkateshjayagopal]

helm unittest results,

root@masternode:~/new/runtime-enforcer-vj/charts/runtime-enforcer# helm unittest .

### Chart [ runtime-enforcer ] .

 PASS  Agent DaemonSet Tests    tests/daemonset_test.yaml
 PASS  Debugger Deployment Tests        tests/deployment_debugger_test.yaml
 PASS  Controller Deployment Tests      tests/deployment_test.yaml
 PASS  Controller PDB Tests     tests/pdb_test.yaml
 PASS  Service Account Tests    tests/serviceaccount_test.yaml
 PASS  VAP Pod Policy Validation Tests  tests/vap_pod_policy_validation_test.yaml

Charts:      1 passed, 1 total
Test Suites: 6 passed, 6 total
Tests:       39 passed, 39 total
Snapshot:    0 passed, 0 total
Time:        280.183068ms

[dottorblaster]

LGTM

[kyledong-suse]

LGTM, thanks!