Move all ingresses into Flux

[Richard87]

Move all ingresses to Flux: Use clusterName and dnsZone substitutes from the configmap flux-system/radix-flux-config

• [x] prometheus
• [x] grafana
• [x] https://github.com/equinor/radix-flux/pull/2170
• [x] https://github.com/equinor/radix-flux/pull/2182
• [x] https://github.com/equinor/radix-flux/pull/2183
• [x] https://github.com/equinor/radix-flux/pull/2184
• [x] https://github.com/equinor/radix-flux/pull/2185
• [x] https://github.com/equinor/radix-flux/pull/2186
• [x] https://github.com/equinor/radix-flux/pull/2188
• [x] https://github.com/equinor/radix-monitoring/pull/78
• [x] https://github.com/equinor/radix-platform/pull/1374

Helm overview:

These helm installs needs to be replaced:

radix-ingress-api               default                         4               2024-03-21 10:12:01.356009293 +0100 CET deployed        ingress-1.0.7                                                                   1.0.7
radix-ingress-at                default                         4               2024-03-21 10:12:27.081994526 +0100 CET deployed        ingress-1.0.7                                                                   1.0.7
radix-ingress-canary            default                         4               2024-03-21 10:12:04.168301644 +0100 CET deployed        ingress-1.0.7                                                                   1.0.7
radix-ingress-console           default                         4               2024-03-21 10:12:06.915375711 +0100 CET deployed        ingress-1.0.7                                                                   1.0.7
radix-ingress-cost-api          default                         4               2024-03-21 10:12:09.750310301 +0100 CET deployed        ingress-1.0.7                                                                   1.0.7
radix-ingress-grafana           default                         4               2024-03-21 10:12:12.608854833 +0100 CET deployed        ingress-1.0.7                                                                   1.0.7
radix-ingress-webhook           default                         4               2024-03-21 10:12:36.504400034 +0100 CET deployed        ingress-1.0.7                                                                   1.0.7
radix-ingress-www               default                         4               2024-03-21 10:12:18.126156917 +0100 CET deployed        ingress-1.0.7                                                                   1.0.7

After migration:

Cleanup old helm secrets from default namespace in all clusters