feat(elasticloadbalancingv2): add security group support for nlb (#27978)

Closes #26735.

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: msambol

packages/@aws-cdk-testing/framework-integ/test/aws-elasticloadbalancingv2/test/integ.nlb.js.snapshot/aws-cdk-elbv2-integ.assets.json

@@ -391,6 +391,31 @@
     }
    }
   },
+  "SGADB53937": {
+   "Type": "AWS::EC2::SecurityGroup",
+   "Properties": {
+    "GroupDescription": "aws-cdk-elbv2-integ/SG",
+    "SecurityGroupEgress": [
+     {
+      "CidrIp": "0.0.0.0/0",
+      "Description": "Allow all outbound traffic by default",
+      "IpProtocol": "-1"
+     }
+    ],
+    "SecurityGroupIngress": [
+     {
+      "CidrIp": "0.0.0.0/0",
+      "Description": "allow https access from the world",
+      "FromPort": 443,
+      "IpProtocol": "tcp",
+      "ToPort": 443
+     }
+    ],
+    "VpcId": {
+     "Ref": "VPCB9E5F0B4"
+    }
+   }
+  },
   "LB8A12904C": {
    "Type": "AWS::ElasticLoadBalancingV2::LoadBalancer",
    "Properties": {
@@ -401,6 +426,14 @@
      }
     ],
     "Scheme": "internet-facing",
+    "SecurityGroups": [
+     {
+      "Fn::GetAtt": [
+       "SGADB53937",
+       "GroupId"
+      ]
+     }
+    ],
     "Subnets": [
      {
       "Ref": "VPCPublicSubnet1SubnetB4246D30"