chore: update variable description.

Author: creynolds15

README.md

@@ -39,7 +39,7 @@ This modules creates:
 | tamr\_zip\_uri | gcs location to download tamr zip from | `string` | n/a | yes |
 | labels | labels to attach to created resources | `map(string)` | `{}` | no |
 | metadata | custom metadata to attach to created VM | `map(string)` | `{}` | no |
-| pre\_start\_script\_content | custom script to run prior to startup\_script | `string` | `""` | no |
+| pre\_install\_bash | Bash to be run before Tamr is installed.<br>  Likely to be used to meet Tamr's prerequisites, if not already met by the image. (https://docs.tamr.com/new/docs/requirements )<br>   This will only be run once before Tamr is installed, unless Tamr fails to install. This bash will also be run on subsequent attempts to install Tamr, so it is recommended that this bash is idempotent. | `string` | `""` | no |
 | tamr\_external\_ip | Create and attach an external ip to tamr VM | `bool` | `false` | no |
 | tamr\_instance\_deletion\_protection | Enabled deletion protection for the tamr VM | `bool` | `true` | no |
 | tamr\_instance\_disk\_size | size of the boot disk | `number` | `100` | no |

main.tf

@@ -2,7 +2,7 @@ locals {
   external_ip = var.tamr_external_ip == true ? 1 : 0
 
   startup_script = templatefile("${path.module}/templates/startup_script.sh.tmpl", {
-    pre_start_script    = var.pre_start_script_content
+    pre_install_bash    = var.pre_install_bash
     tamr_zip_uri        = var.tamr_zip_uri
     tamr_config         = var.tamr_config_file
     tamr_home_directory = var.tamr_instance_install_directory

templates/startup_script.sh.tmpl

@@ -17,8 +17,8 @@ EOF
 # check if tamr has been installed on the VM, if not download and install it
 if [[ ! -f ${tamr_home_directory}/tamr/start-unify.sh ]]; then
     # run any custom commands to prepare VM
-    %{ if pre_start_script }
-    ${pre_start_script}
+    %{ if pre_install_bash }
+    ${pre_install_bash}
     %{ endif }
     # download tamr install
     sudo -S -u tamr -i /bin/bash -c 'gsutil cp ${tamr_zip_uri} ${tamr_home_directory}/unify.zip'

variables.tf

@@ -102,10 +102,14 @@ variable "tamr_config_file" {
   description = "Override generated tamr configuration. The tamr configuration is specified using a yaml file, in the format that is documented (https://docs.tamr.com/previous/docs/configuration-configuring-unify#section-setting-configuration-variables) for configuring “many variables” at once."
 }
 
-variable "pre_start_script_content" {
+variable "pre_install_bash" {
   default     = ""
   type        = string
-  description = "custom script to run prior to startup_script"
+  description = <<EOF
+  Bash to be run before Tamr is installed.
+  Likely to be used to meet Tamr's prerequisites, if not already met by the image. (https://docs.tamr.com/new/docs/requirements )
+   This will only be run once before Tamr is installed, unless Tamr fails to install. This bash will also be run on subsequent attempts to install Tamr, so it is recommended that this bash is idempotent.
+  EOF
 }
 
 #