exim-config/, firewall/, secrets/: Add references to submodules.

The `exim-config' and `firewall' submodules contain complicated m4-based
per-host configuration which already exist as separate projects.  (They
might get pulled in-tree at some point, but probably not.)

The `secrets' submodule contains Ansible variable definitions for
secrets which can't be published in the main repository.

diff --git a/.gitmodules b/.gitmodules
new file mode 100644 (file)
index 0000000..c231579
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,9 @@
+[submodule "secrets"]
+       path = secrets
+       url = ../distorted-ansible.secrets/
+[submodule "firewall"]
+       path = firewall
+       url = ../firewall/
+[submodule "exim-config"]
+       path = exim-config
+       url = ../exim-config/

diff --git a/exim-config b/exim-config
new file mode 160000 (submodule)
index 0000000..1df2595
--- /dev/null
+++ b/exim-config
@@ -0,0 +1 @@
+Subproject commit 1df2595e16dd591d27c4089f19dac493f638d3ca

diff --git a/firewall b/firewall
new file mode 160000 (submodule)
index 0000000..2b5ca00
--- /dev/null
+++ b/firewall
@@ -0,0 +1 @@
+Subproject commit 2b5ca0033749741dbbe22eed9bc12b4f64199b0d

diff --git a/secrets b/secrets
new file mode 160000 (submodule)
index 0000000..3de89e0
--- /dev/null
+++ b/secrets
@@ -0,0 +1 @@
+Subproject commit 3de89e0042f54c7c6fc8ebd78c2f30eb87f2f3d4