Fix terraform lint script
Fix terraform lint script

Invoking the boy scout rule to fix a path issue in the script

Without this fix, when a file needed formatting, you would get the
error:

Use 'terraform fmt' to fix HCL formatting:
Error running fmt: stat terraform: no such file or directory

This is because the script runs in a working directory different than
paas-cf, therefore absolute path must be used.

alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf