Fix puppetfile name in install_all

r10k commands where updated in [1], and file name in install_all was
wrongly changed to Puppetfile1 instead of Puppetfile.

[1] https://review.opendev.org/#/c/726568/

Change-Id: I5edda0bac10ead8c78cc96a4b259fe52b5cc93fc

functions

@@ -62,7 +62,7 @@ install_all() {
   # When installing from local source, we want to install the current source
   # we're working from.
   r10k -v DEBUG puppetfile install \
-    --puppetfile ${SCRIPT_DIR}/Puppetfile1 \
+    --puppetfile ${SCRIPT_DIR}/Puppetfile \
     --moduledir ${PUPPETFILE_DIR}
   cp -a ${SCRIPT_DIR} ${PUPPETFILE_DIR}/openstack_integration
 }