test: moved to tools

Moved the current test folder to tools and started a new test
folder.  This will allow for rapid introduction of new unit-tests into
phosphor-hwmon.  The tools folder contains small tools to aid in
phosphor-hwmon configuration and misc.  This folder will go under review
at another time.

Change-Id: Ice18ffb5cdcbd519d49088e233a8082a9410b03e
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/Makefile.am b/Makefile.am
index 238eaef..27db186 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -27,4 +27,4 @@
 	timer.cpp \
 	hwmon.cpp
 
-SUBDIRS = . test msl
+SUBDIRS = . msl tools