Add chmod to build scripts for .sh files

Author: aiwyatt787

.citd/Jenkinsfilek8s

@@ -84,7 +84,9 @@ pipeline {
 
         stage('Build') {
             steps {
-                script {  
+                script { 
+                    sh("find . -type f -name postBuild.sh -exec chmod +x {} \\;")
+                    sh("find . -type f -name preBuild.sh -exec chmod +x {} \\;") 
                     mplabxProjectBuild(
                         sourceFilePath: "${env.MPLABX_PROJECT_SOURCE}"
                     )