make unbound files more clear

etc/unbound/unbound.conf.d/alone.conf

@@ -0,0 +1,21 @@
+# When there is no dnsmasq
+
+server:
+    # perform cryptographic DNSSEC validation using the root trust anchor.
+    # this should be in /etc/unbound/unbound.conf.d/root-auto-trust-anchor-file.conf
+    # auto-trust-anchor-file: "/var/lib/unbound/root.key"
+    interface: 127.0.0.1
+    access-control: 127.0.0.0/8 allow
+    interface: ::1
+    access-control: ::1 allow
+    port: 53
+    # logging
+    chroot: ""
+    use-syslog: yes
+    log-time-ascii: yes
+    log-queries: yes
+    # 0 - 5, default 1, query information 3
+    verbosity: 1
+    # more cache memory, rrset=msg*2
+    rrset-cache-size: 500m
+    msg-cache-size: 250m

etc/unbound/unbound.conf.d/dnsmasq.conf

@@ -1,3 +1,5 @@
+# For use when unbound is behind dnsmasq
+
 server:
     # perform cryptographic DNSSEC validation using the root trust anchor.
     # this should be in /etc/unbound/unbound.conf.d/root-auto-trust-anchor-file.conf