gitignore updates

Ignore various build artifacts.

Change-Id: I8b0447bf66844c6cfd40b57da4564324dbd0322b
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/fail-monitor/.gitignore b/fail-monitor/.gitignore
new file mode 100644
index 0000000..6aa001e
--- /dev/null
+++ b/fail-monitor/.gitignore
@@ -0,0 +1 @@
+/phosphor-unit-failure-monitor