Terraform

ENHANCEMENTS:

• terraform plan and terraform apply will now warn when the -target option is used, to draw attention to the fact that the result of applying the plan is likely to be incomplete, and to remind to re-run terraform plan with no targets afterwards to ensure that the configuration has converged. (#22783)
• config: New function parseint for parsing strings containing digits as integers in various bases. (#22747)
• config: New function cidrsubnets, which is a companion to the existing function cidrsubnet which can allocate multiple consecutive subnet prefixes (possibly of different prefix lengths) in a single call. (#22858)
• backend/google: The GCS backend now supports OAuth2 token authentication. (#21772)
• provisioner/habitat: Multiple updates and fixes, see PR for details (#22705)

BUG FIXES:

• backend/manta: fix panic when insecure_skip_tls_verify was not set (#22918)