Enable evmserver after configuring db and messaging

[agrare]

When starting EvmServer after having configured the database and messaging we should enable the service so it starts on boot

Before:

[root@manageiq-devel ~]# systemctl status evmserverd.service
● evmserverd.service - EVM server daemon
     Loaded: loaded (/usr/lib/systemd/system/evmserverd.service; disabled; preset: disabled)
     Active: active (running) since Fri 2024-03-08 10:08:04 EST; 49s ago
   Main PID: 5333 (ruby)
      Tasks: 14 (limit: 48891)
     Memory: 597.7M
        CPU: 20.886s
     CGroup: /system.slice/evmserverd.service
             └─5333 "MIQ Server"

After:

[root@manageiq-devel ~]# systemctl status evmserverd.service
● evmserverd.service - EVM server daemon
     Loaded: loaded (/usr/lib/systemd/system/evmserverd.service; enabled; preset: disabled)
     Active: active (running) since Fri 2024-03-08 10:24:18 EST; 8s ago
   Main PID: 5329 (ruby)
      Tasks: 7 (limit: 48891)
     Memory: 333.6M
        CPU: 6.607s
     CGroup: /system.slice/evmserverd.service
             ├─5329 "MIQ Server"
             └─5368 top -b -n 1

[miq-bot]

Checked commit agrare@7eb4bad with ruby 2.7.8, rubocop 1.56.3, haml-lint 0.51.0, and yamllint
0 files checked, 0 offenses detected
Everything looks fine. ⭐