S3 Data Storage (#1)

Using the storage options [here](https://docs.gitea.com/administration/config-cheat-sheet#storage-storage), this commit pushes all packages, avatars, and LFS files to S3.

- Uses AWS S3.
- Frees up storage on EC2 instance, so packages do not eventually steal all of the free space.

Reviewed-on: #1
Co-authored-by: Max <git@maximhutz.me>
Co-committed-by: Max <git@maximhutz.me>

terraform/install.sh

@@ -1,5 +1,6 @@
 #!/bin/sh
 
+## Install extras.
 rpm --rebuilddb
 amazon-linux-extras install docker ansible2 python3.8 -y
 
@@ -10,7 +11,7 @@ systemctl start docker
 # Set up the correct version of Python (for Ansible).
 ln -sf /usr/bin/python3.8 /usr/bin/python3
 ln -sf /usr/bin/pip3.8 /usr/bin/pip3
-pip3 install botocore boto3 requests packaging
+pip3 install botocore boto3 requests packaging --user ssm-user
 python3 -m pip install -U pip
 
 # Add some swap space.