Enable tests by default and change check to allowed

Update these settings according to the comments in [1].

[1]: https://gerrit.openbmc.org/c/openbmc/host-error-monitor/+/66987

Signed-off-by: Jason M. Bills <jason.m.bills@linux.intel.com>
Change-Id: I9feed7d3431fcc212fc669c994e2ff60479bc4c4
diff --git a/meson.options b/meson.options
index a8637ae..b0982cd 100644
--- a/meson.options
+++ b/meson.options
@@ -15,7 +15,7 @@
 option(
     'tests',
     type: 'feature',
-    value: 'disabled',
+    value: 'enabled',
     description: 'Enable unit tests',
 )