Add a template for WPA2-TTLS, which is notably used by Eduroam.

--- a/encryption/templates/active
+++ b/encryption/templates/active
@@ -4,6 +4,7 @@ wpa-psk
 wpa-psk-hex
 wpa2-leap
 wpa2-peap
+wpa2-ttls
 wep-hex
 wep-passphrase
 wep-shared
diff --git a/encryption/templates/wpa2-ttls b/encryption/templates/wpa2-ttls
new file mode 100644
index 0000000..4f66a1e
--- /dev/null
+++ b/encryption/templates/wpa2-ttls
@@ -0,0 +1,20 @@
+name = WPA2-TTLS (used notably by Eduroam)
+author = various contributors
+version = 1
+require identity *Identity anonymous_identity *Anonymous_identity password *Password ca_cert *Path_to_CA_Cert
+protected password *Password
+-----
+ctrl_interface=/var/run/wpa_supplicant
+network={
+        ssid="$_ESSID"
+        scan_ssid=$_SCAN
+        proto=WPA2
+        key_mgmt=WPA-EAP
+        group=CCMP TKIP
+        eap=TTLS
+        identity="$_IDENTITY"
+        password="$_PASSWORD"
+        anonymous_identity="$_ANONYMOUS_IDENTITY"
+        ca_cert="$_CA_CERT"
+        phase2="auth=PAP"
+}
td>
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<div class='path'>path: <a href='/guix/log/?id=cf8e55f0ab0f9550f19aca0fea349f8a386ac595'>root</a>/<a href='/guix/log/etc?id=cf8e55f0ab0f9550f19aca0fea349f8a386ac595'>etc</a>/<a href='/guix/log/etc/guix-gc.timer?id=cf8e55f0ab0f9550f19aca0fea349f8a386ac595'>guix-gc.timer</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/etc/guix-gc.timer?id=cf8e55f0ab0f9550f19aca0fea349f8a386ac595&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-09-20 14:18:21 +0000'>2021-09-20</span></td><td><a href='/guix/commit/etc/guix-gc.timer?id=5c4fd77097e2cecfd4780e099af7954f86779fe1'>etc: Add systemd files for running ‘guix gc’ periodically</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/guix-gc.service.in: New file.
* etc/guix-gc.timer: Likewise.
* .gitignore: Ignore generated ‘guix-gc.service’.
* nix/local.mk (nodist_systemdservice_DATA): Add ‘guix-gc.service’ and
‘guix-gc.timer’.
(EXTRA_DIST): Add ‘guix-gc.service.in’ and ‘guix-gc.timer’.
* doc/guix.texi (Binary Installation): Mention the new systemd files.

Signed-off-by: Mathieu Othacehe &lt;othacehe@gnu.org&gt;
</span></span></td><td>Thiago Jung Bauermann</td></tr>