Initial commit

First attempt at using Pulumi for cloud infrastructure management.  To
start with, the project deploys an ECS cluster that runs two containers,
_blackbox-exporter_ and _vmagent_.  Together, these will monitor the
publicly-accessible web sites.

.gitignore

@@ -0,0 +1,5 @@
+*.egg-info/
+.pulumi/backups/
+__pycache__/
+*.py[co]
+*.bak*