Adding more cycles to gempak script gfs_meta_sa2.sh (#2518)

This PR changes gfs_meta_sa2.sh running from 06 cycle only to all
cycles. This change will satisfy NCO Bugzilla #1211 request to add 00
cycle run in order to consolidate GFS and UKMET gempak jobs.
  
Resolves #291

gempak/ush/gfs_meta_sa2.sh

@@ -1,6 +1,6 @@
 #! /usr/bin/env bash
 #
-# Metafile Script : ukmet_gfs_meta_sa2.sh
+# Metafile Script : gfs_meta_sa2.sh
 #
 # Creates several South American gfs charts, including 500mb and psml
 # comparisons to the ecmwf and ukmet
@@ -30,14 +30,6 @@ metatype="sa2"
 metaname="${mdl}_${metatype}_${cyc}.meta"
 device="nc | ${metaname}"
 
-#
-# IF CYCLE IS NOT 00Z OR 06Z EXIT SCRIPT.
-# Also exit if run from 00z gfs
-#
-if [[ ${cyc} != "06" ]]; then
-    exit
-fi
-
 grid1="F-GFSHPC | ${PDY:2}/${cyc}00"
 
 # DEFINE YESTERDAY