Fix intermittent BATS module stream filter test failure

The grep pattern "5.21" treats the dot as a regex wildcard,
matching "5<any-char>21" across the entire CSV line including
the Uuid column which contains random Pulp UUIDs. This causes
the wrong module stream to be selected ~4.5% of runs.

Use awk to match exactly on the Stream column (field 3) instead.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people

bats/fb-katello-content.bats

@@ -322,7 +322,7 @@ setup() {
   hammer content-view filter create --organization="${ORGANIZATION}" \
     --content-view="${CONTENT_VIEW_2}" --name="${FILTER3}" --inclusion=true --type=modulemd
   modulemd_id=$(hammer --csv --no-headers module-stream list --organization="${ORGANIZATION}" \
-    | grep --max-count=1 "5.21" | cut -d, -f1)
+    | awk -F, '$3 == "5.21" {print $1; exit}')
   hammer content-view filter rule create --organization="${ORGANIZATION}" \
     --content-view="${CONTENT_VIEW_2}" --content-view-filter="${FILTER3}" --module-stream-ids=$modulemd_id
 }