Do not run workflows on forks (#2025)

Author: ni-jfitzger

.github/workflows/github_actions_aws_rhel_python64.yml

@@ -18,6 +18,7 @@ on:
 jobs:
   do-the-job1:
     name: system_test
+    if: github.repository == 'ni/nimi-python'
     runs-on: 
     - self-hosted
     - linux

.github/workflows/github_actions_aws_windows_python32.yml

@@ -19,6 +19,7 @@ on:
 jobs:
   do-the-job1:
       name: system_test
+      if: github.repository == 'ni/nimi-python'
       runs-on: 
       - self-hosted
       - windows

.github/workflows/github_actions_aws_windows_python64.yml

@@ -33,6 +33,7 @@ on:
 jobs:
   do-the-job1:
       name: system_test
+      if: github.repository == 'ni/nimi-python'
       runs-on: 
       - self-hosted
       - windows