[apache user] Update the home directory for apache.

Apache home dir used to be created buy the apache-2.eclass file
in portage stable, we no longer use the home dir or shell in
portage stable:

https://chromium-review.googlesource.com/c/chromiumos/overlays/eclass-overlay/+/1487713/

Restore the home dir of apache to be what is was before this change

BUG=chromium:968293
TEST=Moblab local testing, tryjob

Change-Id: If27a5ae6adb7a7fcc656311c5908594e3daf40ad
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/eclass-overlay/+/1636466
Reviewed-by: Keith Haddow <haddowk@chromium.org>
Commit-Queue: Keith Haddow <haddowk@chromium.org>
Tested-by: Keith Haddow <haddowk@chromium.org>
diff --git a/profiles/base/accounts/user/apache b/profiles/base/accounts/user/apache
index 4e1bffe..3d31c69 100644
--- a/profiles/base/accounts/user/apache
+++ b/profiles/base/accounts/user/apache
@@ -2,5 +2,5 @@
 uid:244
 gid:244
 gecos:apache server
-home:/dev/null
+home:/var/www
 shell:/bin/false