Fix TF_VAR_apm_server_tail_sampling for scheduled gh actions (#15003) (…

…#15004)

A regression from #14985 causing nightly benchmark to fail.

(cherry picked from commit 7c1b706)

Co-authored-by: Carson Ip <[email protected]>

.github/workflows/benchmarks.yml

@@ -62,8 +62,8 @@ jobs:
       TF_VAR_private_key: ./id_rsa_terraform
       TF_VAR_public_key: ./id_rsa_terraform.pub
       TF_VAR_run_standalone: ${{ inputs.runStandalone || github.event.schedule=='0 5 */5 * *' }}
-      TF_VAR_apm_server_tail_sampling: ${{ inputs.enableTailSampling }}
-      TF_VAR_apm_server_tail_sampling_storage_limit: ${{ inputs.tailSamplingStorageLimit }}
+      TF_VAR_apm_server_tail_sampling: ${{ inputs.enableTailSampling || 'false' }} # set the default again otherwise schedules won't work
+      TF_VAR_apm_server_tail_sampling_storage_limit: ${{ inputs.tailSamplingStorageLimit || '10GB' }} # set the default again otherwise schedules won't work
       RUN_STANDALONE: ${{ inputs.runStandalone || github.event.schedule=='0 5 */5 * *' }}
       TFVARS_SOURCE: ${{ inputs.profile || 'system-profiles/8GBx1zone.tfvars' }} # // Default to use an 8gb profile
       TF_VAR_BUILD_ID: ${{ github.run_id }}