all images back in; updates #134'

Author: martukas

Jenkinsfile

@@ -1,7 +1,7 @@
 project = "h5cpp"
 
 images = [
-/*    'centos': [
+    'centos': [
         'name': 'essdmscdm/centos7-build-node:1.0.1',
         'sh': 'sh'
     ],
@@ -20,7 +20,7 @@ images = [
     'ubuntu1604': [
         'name': 'essdmscdm/ubuntu16.04-build-node:2.0.0',
         'sh': 'sh'
-    ],*/
+    ],
     'ubuntu1710': [
         'name': 'essdmscdm/ubuntu17.10-build-node:1.0.0',
         'sh': 'sh'