Error if no krb5.conf is found.

[bodgit]

Should mean config.Load() is never called with an empty string.

[austinvalle]

Hey @bodgit 👋🏻 !

I recreated the original issue that was raised in terraform-provider-dns and ran it with your library changes.

v1.2.1

=== RUN   TestAccDnsTXTRecordSet_Basic
    resource_dns_txt_record_set_test.go:47: Step 1/6 error: Error running apply: exit status 1

        Error: Error updating DNS record: Error negotiating GSS context: configuration file could not be opened:  open : no such file or directory

          with dns_txt_record_set.foo,
          on terraform_plugin_test.tf line 3, in resource "dns_txt_record_set" "foo":
           3:   resource "dns_txt_record_set" "foo" {

#92 - a2d9455fba66a2347cbb8865b182b7cc957819bc

=== RUN   TestAccDnsTXTRecordSet_Basic
    resource_dns_txt_record_set_test.go:47: Step 1/6 error: Error running apply: exit status 1

        Error: Error updating DNS record: Error negotiating GSS context: 1 error occurred:
        	* stat /etc/krb5.conf: no such file or directory



          with dns_txt_record_set.foo,
          on terraform_plugin_test.tf line 3, in resource "dns_txt_record_set" "foo":
           3:   resource "dns_txt_record_set" "foo" {

Overall this PR looks great! I did have one non-critical note that I left.

Thanks again for taking a look 👋🏻

[austinvalle]

Here is the result with 45db94c:

=== RUN   TestAccDnsTXTRecordSet_Basic
    resource_dns_txt_record_set_test.go:47: Step 1/6 error: Error running apply: exit status 1

        Error: Error updating DNS record: Error negotiating GSS context: 2 errors occurred:
        	* KRB5_CONFIG: not found
        	* stat /etc/krb5.conf: no such file or directory



          with dns_txt_record_set.foo,
          on terraform_plugin_test.tf line 3, in resource "dns_txt_record_set" "foo":
           3:   resource "dns_txt_record_set" "foo" {

Looks great! 👍🏻