[ci] fix: disable workflows with self-host machines to run on fork

.github/workflows/checkpoint_converter.yml

@@ -73,6 +73,7 @@ permissions:
 
 jobs:
   checkpoint_converter:
+    if: github.repository_owner == 'volcengine'
     runs-on: [L20x8]
     timeout-minutes: 20 # Increase this timeout value as needed
     env:
@@ -107,6 +108,7 @@ jobs:
         run: |
           rm -rf checkpoints
   checkpoint_converter_large_moe_models:
+    if: github.repository_owner == 'volcengine'
     runs-on: [L20x8]
     timeout-minutes: 30 # Increase this timeout value as needed
     env:

.github/workflows/cpu_unit_tests.yml

@@ -59,6 +59,7 @@ permissions:
 
 jobs:
   cpu_unit_tests:
+    if: github.repository_owner == 'volcengine'
     runs-on: [L20x8]
     timeout-minutes: 20 # Increase this timeout value as needed
     env:

.github/workflows/e2e_ascend.yml

@@ -65,6 +65,7 @@ permissions:
 
 jobs:
   test:
+    if: github.repository_owner == 'volcengine'
     name: verl Ascend test (self-host)
     runs-on: [self-hosted, npu-0]
     timeout-minutes: 40 # Increase this timeout value as needed

.github/workflows/gpu_unit_tests.yml

@@ -72,6 +72,7 @@ permissions:
 
 jobs:
   gpu_unit_tests:
+    if: github.repository_owner == 'volcengine'
     runs-on: [L20x8]
     timeout-minutes: 60 # Increase this timeout value as needed
     env: