CLOUDP-319840: Fixes papertrail implementation (#3901)

Author: cveticm

build/ci/release.yml

@@ -189,13 +189,13 @@ functions:
           - unstable
         script: |
           # Get unstable to determine product name
-          if [[ "${unstable:-}" == "-unstable" ]]; then
+          if [ "$unstable" = "-unstable" ]; then
             product="atlascli-snapshot"
           else
             product="atlascli"
           fi
 
-          cat <<EOT > expansions.yaml
+          cat <<EOT > src/github.com/mongodb/mongodb-atlas-cli/expansions.yaml
           product: "$product"
           EOT
     - command: expansions.update
@@ -515,6 +515,8 @@ tasks:
           content_type: ${content_type|application/x-gzip}
           display_name: downloads-center-new-
       - func: "trace artifacts"
+        vars:
+          unstable: ${unstable}
       - func: "send slack notification"
   - name: push_atlascli_generate
     patchable: false