Run full regress conditionally

When FULL_REGRESS environment variable is set to 1 run whole
installcheck-world regres test suite.

gpdb.spec

@@ -1,6 +1,6 @@
 NAME:           gpdb
 Version:        6.17.0
-Release:        2
+Release:        3
 Summary:        Open Source Greenplum Database
 
 License:        Apache 2.0
@@ -54,6 +54,7 @@ make -s unittest-check
 make -s unitest-check || true
 %endif
 
+%if 0%{getenv:FULL_REGRESS}
 # warmup env
 sleep 5
 
@@ -78,12 +79,16 @@ sleep 5
 source gpAux/gpdemo/gpdemo-env.sh
 
 make installcheck-world
+%endif
 
 %files
 %dir /usr/local/greenplum-db-%{version}
 /usr/local/greenplum-db-%{version}
 
 %changelog
+* Thu Aug 12 2021 peifengq <qiupf2000@gmail.com> - 6.17.0-3
+- Run full regress conditionally
+
 * Wed Aug 11 2021 peifengq <qiupf2000@gmail.com> - 6.17.0-2
 - add test report for 6.17.0, fix tests