Add test artifacts to gitignore

Add test artifacts to .gitignore
Add libtool to .gitignore

Tested: Verified the * in the gitignore stops at periods, so modifying a
test.cpp or test_*.cpp will still show up as a change.

Change-Id: I24a449ead29fb038a9cba8c51ab1b753a8407708
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/.gitignore b/.gitignore
index d85664e..285ed8d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,6 +27,7 @@
 *.la
 *.lo
 .libs/
+libtool
 callout-test
 callouts-gen.hpp
 callouts/.dirstamp
@@ -34,3 +35,10 @@
 elog-process-metadata.cpp
 phosphor-log-manager
 phosphor-logging.pc
+test/*_test.log
+test/*_test.trs
+test/*_test_*.log
+test/*_test_*.trs
+test/test-suite.log
+test/*_test_*
+test/*_test