tlsdated: support multiple failover hosts

Swap over to using 'source' stanzas in the config file (see tlsdated.conf for an
example), and cycle through them as we make tlsdate attempts.

TODO: changelog, man page, etc updates

Signed-off-by: Elly Fong-Jones <[email protected]>
diff --git a/CHANGELOG b/CHANGELOG
index 95f0da2..33571a8 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -12,6 +12,7 @@
   Support -j to add jitter to tlsdated time checks.
   Exponential backoff when tls connections fail.
   Add config file support (have a look at man/tlsdated.conf.5)
+  Support multiple hosts for time fetches
 0.0.4 Wed 7 Nov, 2012
   Fixup CHANGELOG and properly tag
     Version Numbers Are Free! Hooray!