Update Jenkinsfile to modify default Rocky Linux version and add parameters for parallel downloads and conversions

Signed-off-by: Stephen Simpson <stevo81989@gmail.com>

Jenkinsfile

@@ -42,7 +42,7 @@ spec:
     parameters {
         string(
             name: 'VERSIONS',
-            defaultValue: '8.10 9.6 10.0',
+            defaultValue: '8.10 9.6 10.1',
             description: 'Rocky Linux versions to build (space-separated)'
         )
         string(
@@ -50,6 +50,16 @@ spec:
             defaultValue: 'rockyman',
             description: 'B2 bucket name for uploads'
         )
+        number(
+            name: 'PARALLEL_DOWNLOADS',
+            defaultValue: 5,
+            description: 'Number of parallel downloads'
+        )
+        number(
+            name: 'PARALLEL_CONVERSIONS',
+            defaultValue: 10,
+            description: 'Number of parallel conversions'
+        )
     }
 
     options {
@@ -88,7 +98,9 @@ docker run --rm \
   -v "$(pwd)/tmp:/data/tmp" \
   rocky-man:${BUILD_NUMBER} \
       --versions ${VERSIONS} \
-  --verbose
+      --verbose \
+      --parallel-downloads ${PARALLEL_DOWNLOADS} \
+      --parallel-conversions ${PARALLEL_CONVERSIONS}
                     '''
                 }
             }