Move testapps

Move them into samples
Create folder tests for actual test projects.

Change-Id: I9e7c668ec7241d237f8aba8e539344f2f0800642
diff --git a/.gitignore b/.gitignore
index ae85b59..4c28e93 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,12 +6,13 @@
 .gradle
 /build
 gradle/build
-testapps/*/build
-testapps/multiproject/*/build
-testapps/tictactoe/*/build
-testapps/applibtest/*/build
-testapps/flavorlib/*/build
-testapps/libsTest/*/build
-testapps/repo/*/build
+tests/*/build
+samples/*/build
+samples/multiproject/*/build
+samples/tictactoe/*/build
+samples/applibtest/*/build
+samples/flavorlib/*/build
+samples/libsTest/*/build
+samples/repo/*/build
 /repo
 /out