Fixed make distclean not clean gpMgmt
After python version updated, gpdb report build problem even after 'make distclean'.
The root cause is shell command broken because multiple python versions directories in below:
gpMgmt/bin/pythonSrc/subprocess32
gpMgmt/bin/pythonSrc/PyGreSQL-4.0/build/lib.linux
@@ -133,6 +133,7 @@ distclean maintainer-clean:
$(MAKE) -C gpAux/platform $@
$(MAKE) -C contrib $@
$(MAKE) -C config $@
+ $(MAKE) -C gpMgmt $@
$(MAKE) -C src $@
rm -f config.cache config.log config.status GNUmakefile
# Garbage from autoconf:
