Add in JJB macros for pushing to swift

Two new macros for pushing to swift. zuul_swift_upload which takes
'upload_source' to push using zuul_swift_upload.py slavescript and
zuul_swift_upload_console which uses grab_console_log.sh to download
the console log via wget from the jenkins web UI and then pushes it
with the former macro

Change-Id: I1c7619e2b67e2d4ddafec1faad0597076385c350
Merge "Add in JJB macros for pushing to swift"