Add ippool unit-test for 'make check' runs

This test creates a variety of v4 (and one v6) pool and performs
allocations until the pool is full, then frees a random number of
randomly distributed addresses, re-allocates them and again checks that
they're all available and finally once the pool is full allocations
fail.

Change-Id: Ibf4588e8f3ae71684e5262c0caaa2689aee73a94
diff --git a/.gitignore b/.gitignore
index 6885cd3..25cd613 100644
--- a/.gitignore
+++ b/.gitignore
@@ -45,3 +45,9 @@
 */.deps
 */.libs
 */Makefile
+# testsuite
+tests/atconfig
+tests/*/*_test
+tests/testsuite
+tests/testsuite.log
+tests/package.m4