Ignore hbase-env.sh
Ignore hbase-env.sh

This generated file always ends up in my staging area.  Let's git
ignore it.

Change-Id: I2ab61b6e5052260ffdbc42ba739046bbc74774cb
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/5856
Reviewed-by: Skye Wanderman-Milne <6d4b168ab637b0a20cc9dbf96abb2537f372f946@cloudera.com>
Tested-by: Daniel Hecht <20ebd99959f0f6e5dcb0fc319b4d8ef53a16b5fb@cloudera.com>

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