Ci: add repository condition for validation jobs in smoke tests to exclude forks (#1260)

Disable smoke tests for forks.

WA for CICD as secrets used in smoke tests are not being passed to
forks, resulting in None being passed in configs and failing tests.

 Fixes: b2e137d

Author: KarolinaPomian

.github/workflows/smoke-tests.yml

@@ -17,6 +17,7 @@ permissions:
   contents: read
 jobs:
   validation-build-mtl:
+    if: github.repository == 'Media-Transport-Library/Media-Transport-Library'
     runs-on: [Linux, self-hosted, DPDK]
     timeout-minutes: 60
     outputs:
@@ -136,6 +137,7 @@ jobs:
           echo "VIRTUAL_ENV=$PWD/venv/bin/activate" >> "$GITHUB_ENV"
   validation-run-tests:
     needs: [validation-build-mtl]
+    if: github.repository == 'Media-Transport-Library/Media-Transport-Library'
     runs-on: [self-hosted, "${{ needs.validation-build-mtl.outputs.runner-id }}"]
     timeout-minutes: 720
     env: