Adjust ASF push script names to match our repo setup.
Adjust ASF push script names to match our repo setup.

Our gerrit repo is not Impala, but ImpalaASF:

https://gerrit.cloudera.org/#/q/status:open+project:ImpalaASF

Some Impala devlopers already use "gerrit" as a remote name for the
Impala gerrit repo, so use asf-impala as the git remote name.

Change-Id: Icea354314c37b2047c2e7f7c4ff2e0d036dff58b
Reviewed-on: http://gerrit.cloudera.org:8080/3702
Reviewed-by: Matthew Jacobs <df2fa7c39d141dc5dc5589fed74180e757ed6c9a@cloudera.com>
Tested-by: Internal Jenkins

michaelhkw/incubator-impala,michaelhkw/incubator-impala,cloudera/Impala,cloudera/Impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,cloudera/Impala,cloudera/Impala,michaelhkw/incubator-impala,cloudera/Impala,cloudera/Impala,michaelhkw/incubator-impala,cloudera/Impala,michaelhkw/incubator-impala