ci: run long jobs only if Accepted label is not set

To avoid wasting resources on our new merge workflow.

Reviewed-by: Alexey Tikhonov <atikhono@redhat.com>
Reviewed-by: Justin Stephenson <jstephen@redhat.com>

Author: pbrezina

.github/workflows/build.yml

@@ -10,6 +10,7 @@ concurrency:
   cancel-in-progress: true
 jobs:
   make-distcheck:
+    if: github.event_name == 'push' || !contains(github.event.pull_request.labels.*.name, 'Accepted')
     runs-on: ubuntu-latest
     container: quay.io/sssd/ci-client-devel:latest
     permissions:
@@ -57,6 +58,7 @@ jobs:
         if-no-files-found: ignore
 
   freebsd:
+    if: github.event_name == 'push' || !contains(github.event.pull_request.labels.*.name, 'Accepted')
     runs-on: ubuntu-latest
     steps:
       - name: Repository checkout

.github/workflows/ci.yml

@@ -9,6 +9,7 @@ concurrency:
   cancel-in-progress: true
 jobs:
   prepare:
+    if: github.event_name == 'push' || !contains(github.event.pull_request.labels.*.name, 'Accepted')
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -23,6 +24,7 @@ jobs:
       run: ./contrib/ci/get-matrix.py --action
 
   intgcheck:
+    if: github.event_name == 'push' || !contains(github.event.pull_request.labels.*.name, 'Accepted')
     needs: [prepare]
     strategy:
       fail-fast: false
@@ -92,6 +94,7 @@ jobs:
           ./sssd/ci-build-debug/*.valgrind.log
 
   system:
+    if: github.event_name == 'push' || !contains(github.event.pull_request.labels.*.name, 'Accepted')
     needs: [prepare]
     strategy:
       fail-fast: false