modify each file and add a commit message

```

ubuntu-init.yaml

@@ -1,4 +1,3 @@
-# BEGIN: cloud-init.yaml
 #cloud-config
 package_update: true
 package_upgrade: true
@@ -19,10 +18,13 @@ users:
     shell: /bin/bash
     ssh_authorized_keys:
       - ssh-rsa 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 greg@ligma
+    lock_passwd: false
+    ssh_pwauth: false
+    chpasswd:
+      expire: false
 
 runcmd:
   - INSTANCE_ID=$(curl -s http://169.254.169.254/latest/meta-data/instance-id)
-    AVAILABILITY_ZONE=$(curl -s http://169.254.169.254/latest/meta-data/placement/availability-zone)
-    HOSTNAME="$INSTANCE_ID-$AVAILABILITY_ZONE"
-    hostnamectl set-hostname $HOSTNAME
-# END: cloud-init.yaml
+  - AVAILABILITY_ZONE=$(curl -s http://169.254.169.254/latest/meta-data/placement/availability-zone)
+  - HOSTNAME="$INSTANCE_ID-$AVAILABILITY_ZONE"
+  - hostnamectl set-hostname $HOSTNAME

ubuntu-instance.tf

@@ -4,16 +4,16 @@ provider "aws" {
 }
 
 resource "aws_instance" "example" {
-    ami           = "ami-0c94855ba95c71c99"  # Ubuntu 20.04 LTS
+    ami           = "ami-06aa3f7caf3a30282"  # Ubuntu 20.04 LTS
     instance_type = "t2.micro"
     associate_public_ip_address = true
-
+    security_groups = [aws_security_group.example_sg]
     root_block_device {
         volume_size = 50
         volume_type = "gp2"
     }
 
-    user_data = file("${path.module}/ubuntu-init.yaml")
+    user_data = base64encode(file("${path.module}/ubuntu-init.yaml"))
 
     tags = {
         Name = "cloud-init-example"
@@ -32,10 +32,3 @@ resource "aws_security_group" "example_sg" {
     }
 }
 
-resource "aws_security_group" "example_sg" {
-    ingress {
-        from_port   = 22
-        to_port     = 22
-        protocol    = "tcp"
-    }
-}