Add message upon network offering creation to warn user of VR creation

ui/public/locales/en.json

@@ -2627,6 +2627,8 @@
 "message.volume.state.uploadinprogress": "Volume upload is in progress.",
 "message.volume.state.uploadop": "The volume upload operation is in progress or in short the volume is on secondary storage.",
 "message.volume.state.primary.storage.suitability": "The suitability of a primary storage for a volume depends on the disk offering of the volume and on the virtual machine allocations if the volume is attached to a virtual machine.",
+"message.vr.alert.upon.network.offering.creation.l2": "As virtual routers are not created for L2 networks, the compute offering will not be used.",
+"message.vr.alert.upon.network.offering.creation.others": "As none of the obligatory services for creating a virtual router (VPN, DHCP, DNS, Firewall, LB, UserData, SourceNat, StaticNat, PortForwarding) are enabled, the virtual router will not be created and the compute offering will not be used.",
 "message.warn.filetype": "jpg, jpeg, png, bmp and svg are the only supported image formats.",
 "message.zone.creation.complete": "Zone creation complete.",
 "message.zone.detail.description": "Populate zone details.",

ui/public/locales/pt_BR.json

@@ -2462,6 +2462,8 @@
 "message.volume.state.uploaderror": "O carregamento do volume encontrou um erro",
 "message.volume.state.uploadinprogress": "Carregamento do volume em progresso",
 "message.volume.state.uploadop": "A opera\u00e7\u00e3o de carregamento de volume est\u00e1 em andamento",
+"message.vr.alert.upon.network.offering.creation.l2": "Como VRs não são criados para redes do tipo L2, a oferta de computação não será utilizada.",
+"message.vr.alert.upon.network.offering.creation.others": "Como nenhum dos serviços obrigatórios para criação do VR (VPN, DHCP, DNS, Firewall, LB, UserData, SourceNat, StaticNat, PortForwarding) foram habilitados, o VR não será criado e a oferta de computação não será usada.",
 "message.warn.filetype": "jpg, jpeg, png, bmp e svg s\u00e3o os \u00fanicos formatos de imagem suportados",
 "message.zone.creation.complete": "Cria\u00e7\u00e3o de zona completa",
 "message.zone.detail.description": "Preencha os detalhes da zona",

ui/src/views/offering/AddNetworkOffering.vue

@@ -237,7 +237,13 @@
             </a-radio-button>
           </a-radio-group>
         </a-form-item>
-        <a-form-item v-if="isVirtualRouterForAtLeastOneService || isVpcVirtualRouterForAtLeastOneService">
+        <a-form-item>
+          <a-alert v-if="!isVirtualRouterForAtLeastOneService" type="warning" style="margin-bottom: 10px">
+            <template #message>
+              <span v-if="guestType === 'l2'" v-html="$t('message.vr.alert.upon.network.offering.creation.l2')" />
+              <span v-else v-html="$t('message.vr.alert.upon.network.offering.creation.others')" />
+            </template>
+          </a-alert>
           <template #label>
             <tooltip-label :title="$t('label.serviceofferingid')" :tooltip="apiParams.serviceofferingid.description"/>
           </template>