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"
+}
ble>
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<tr><td><span title='2020-10-01 18:39:41 +0200'>2020-10-01</span></td><td><a href='/guix/commit/build-aux/hydra/guix-modular.scm?id=c5cf45e9068e4c1f97f7357a3c051b2ad19f5e25'>ci: Add log and outputs keys.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2020-10-01 11:46:53 +0200'>2020-10-01</span></td><td><a href='/guix/commit/build-aux/hydra/guix-modular.scm?id=3ca014d1df35c50f50c6658166d1149ccd2f0e19'>ci: Add nix-name and system keys.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2020-03-05 23:40:24 +0100'>2020-03-05</span></td><td><a href='/guix/commit/build-aux/hydra/guix-modular.scm?id=530e31b82448ba00dbbe6abc078204d340c09cb1'>hydra: Remove uses of _IOLBF.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-06-10 23:32:00 +0200'>2018-06-10</span></td><td><a href='/guix/commit/build-aux/hydra/guix-modular.scm?id=e740e8b27d8ac255ccc3737a1f66f0951578d845'>hydra: guix-modular: Build the full Guix.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-04-08 22:07:47 +0200'>2018-04-08</span></td><td><a href='/guix/commit/build-aux/hydra/guix-modular.scm?id=98cda1b997442524ec8027fa1c1f9643eba6154b'>hydra: guix-modular: Honor the 'systems' argument.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-04-08 19:57:31 +0200'>2018-04-08</span></td><td><a href='/guix/commit/build-aux/hydra/guix-modular.scm?id=16c28becf2a2fcd48f52b83dc17889587b806615'>hydra: guix-modular: Explicitly build for the latest 2.2.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-04-08 17:48:33 +0200'>2018-04-08</span></td><td><a href='/guix/commit/build-aux/hydra/guix-modular.scm?id=9fe95946118e9530504699360b1ca3507fa0360d'>hydra: 'guix-modular' jobs use the new 'build-self'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-04-08 17:48:33 +0200'>2018-04-08</span></td><td><a href='/guix/commit/build-aux/hydra/guix-modular.scm?id=351f384e57939005b25fa976952e3a0e08785893'>cuirass: Add job specs for the modular Guix.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-11-21 23:09:17 +0100'>2017-11-21</span></td><td><a href='/guix/commit/build-aux/hydra/guix-modular.scm?id=11a54b3d6ed64efbbc41d3267ef06ecf590e74d3'>hydra: Add jobs for the modular Guix.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>