Ignore Terraform crash log files

Terraform.gitignore

-#  Local .terraform directories
+# Local .terraform directories
 **/.terraform/*
 
 # .tfstate files
 *.tfstate
 *.tfstate.*
 
+# Crash log files
+crash.log
+
 # Ignore any .tfvars files that are generated automatically for each Terraform run. Most
 # .tfvars files are managed as part of configuration and so should be included in
 # version control.