Enforce variable init

There were a few places we weren't initting our variables per cpp core
guidelines.  Fix all of them, and enable checks for this.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: Iba09924beb9fb26f597ff94d1cecbd6d6b1af912
diff --git a/.clang-tidy b/.clang-tidy
index eae3c72..311617b 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -202,7 +202,9 @@
 clang-analyzer-webkit.NoUncountedMemberChecker,
 clang-analyzer-webkit.RefCntblBaseVirtualDtor,
 cppcoreguidelines-init-variables,
+cppcoreguidelines-interfaces-global-init,
 cppcoreguidelines-pro-bounds-pointer-arithmetic,
+cppcoreguidelines-pro-type-member-init,
 cppcoreguidelines-pro-type-reinterpret-cast,
 cppcoreguidelines-special-member-functions,
 misc-misplaced-const,