refactor: rename hooks files for testing

Author: fabiovincenzi

test/preReceive/pre-receive-hooks/always-allow.sh renamed to test/preReceive/pre-receive-hooks/always-exit-0.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 while read oldrev newrev refname; do
-  echo "Push need manual approve to $refname"
+  echo "Push rejected to $refname"
 done
 exit 1

test/preReceive/pre-receive-hooks/always-exit-1.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 while read oldrev newrev refname; do
-  echo "Push rejected to $refname"
+  echo "Push need manual approve to $refname"
 done
 exit 2