Remove mika and mkaapu users

[vjuntunen]

Remove mika and mkaapu users from ghaf-infra user
and from testagents

[henrirosten]

You also need to remove all other references to those users, and their keys in ssh-keys.yaml:

❯ grep -r mika . -n
./terraform/binary-cache.tf:34:      for user in toset(["bmg", "flokli", "hrosten", "jrautiola", "vjuntunen", "mkaapu", "karim", "cazfi", "mika"]) : {
./terraform/jenkins-controller.tf:36:      for user in toset(["bmg", "flokli", "hrosten", "jrautiola", "mkaapu", "mika", "karim", "cazfi", "vjuntunen", "ktu", "alextserepov"]) : {
./ssh-keys.yaml:16:mika:
./ssh-keys.yaml:17: - ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKoroafXsrWkoLewJ7EYcHodqlYILV2T8xtRo6RL99vz mika@nixos
./hosts/ghaf-proxy/configuration.nix:28:      user-mika
./hosts/builders/ficolo.nix:24:      user-mika
./hosts/builders/hetzarm/configuration.nix:28:      user-mika
./hosts/himalia/configuration.nix:24:      user-mika

❯ grep -r mkaapu . -n
./terraform/binary-cache.tf:34:      for user in toset(["bmg", "flokli", "hrosten", "jrautiola", "vjuntunen", "mkaapu", "karim", "cazfi", "mika"]) : {
./terraform/jenkins-controller.tf:36:      for user in toset(["bmg", "flokli", "hrosten", "jrautiola", "mkaapu", "mika", "karim", "cazfi", "vjuntunen", "ktu", "alextserepov"]) : {
./ssh-keys.yaml:13:mkaapu:
./ssh-keys.yaml:14: - ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJYpWmLovw4yIfjhWZ75PgtVfk9ZUcYHRLORcDltoufa mkaapu@nixzure
./hosts/ghaf-proxy/configuration.nix:33:      user-mkaapu
./hosts/binarycache/configuration.nix:31:      user-mkaapu
./hosts/ghaf-log/configuration.nix:29:      user-mkaapu
./hosts/builders/ficolo.nix:22:      user-mkaapu
./hosts/builders/hetzarm/configuration.nix:26:      user-mkaapu

[vjuntunen]

Oh! You're right. That's why I opened this Pr :)