Renames master mention to main in ipa building jobs. Changes m3-dev-tools trigger phrases
accordingly and some minor improvements

Change-Id: Ic453b485fc5f7a58e0c629e394f383fb0299bb6a
diff --git a/jjb/metal3/job_main_clean.yml b/jjb/metal3/job_main_clean.yml
index f4a642c..03d1b0f 100644
--- a/jjb/metal3/job_main_clean.yml
+++ b/jjb/metal3/job_main_clean.yml
@@ -28,7 +28,7 @@
 - job-template:
     id: main_clean
     name: '{job_prefix}_main_integration_tests_cleanup'
-    description: "K8s CAPM3 integration tests cleanup"
+    description: "CAPM3 integration tests cleanup"
     project-type: pipeline
     defaults: global
     disabled: False