build: few more .gitignore entries

Change-Id: I833151c077bf054de6b09fff1180570e32a1ecaa
Type: improvement
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/.gitignore b/.gitignore
index 64dbb8c..ec9ee7b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -129,3 +129,15 @@
 /extras/hs-test/hs-test
 /extras/hs-test/http_server
 /extras/hs-test/.build.vpp
+
+# ./configure
+/CMakeFiles
+/bin
+/lib
+/.ninja_deps
+/.ninja_log
+/CMakeCache.txt
+/build.ninja
+/cmake_install.cmake
+/startup.conf
+/startup.vpp