pkg: Add FreeBSD-base to /etc/pkg/FreeBSD.conf

On -CURRENT and -STABLE this gets bits from pkg.freebsd.org; but we get
base system bits from pkgbase.freebsd.org for BETA/RC/RELEASE.

Note that this repository is disabled by default, but can still be used
by explicitly specifying it, e.g. "pkg upgrade -r FreeBSD-base".

With hat:	re
MFC after:	8 hours (needed in 15.0-RC1)

usr.sbin/pkg/FreeBSD.conf.latest

@@ -6,6 +6,8 @@
 #   echo "FreeBSD-ports: { enabled: no }" > /usr/local/etc/pkg/repos/FreeBSD.conf
 #   echo "FreeBSD-ports-kmods: { enabled: no }" >> /usr/local/etc/pkg/repos/FreeBSD.conf
 #
+# Note that the FreeBSD-base repository is disabled by default.
+#
 
 FreeBSD-ports: {
   url: "pkg+https://pkg.FreeBSD.org/${ABI}/latest",
@@ -21,3 +23,10 @@ FreeBSD-ports-kmods: {
   fingerprints: "/usr/share/keys/pkg",
   enabled: yes
 }
+FreeBSD-base: {
+  url: "pkg+https://pkg.FreeBSD.org/${ABI}/base_latest",
+  mirror_type: "srv",
+  signature_type: "fingerprints",
+  fingerprints: "/usr/share/keys/pkg",
+  enabled: no
+}

usr.sbin/pkg/FreeBSD.conf.quarterly

@@ -6,6 +6,8 @@
 #   echo "FreeBSD-ports: { enabled: no }" > /usr/local/etc/pkg/repos/FreeBSD.conf
 #   echo "FreeBSD-ports-kmods: { enabled: no }" >> /usr/local/etc/pkg/repos/FreeBSD.conf
 #
+# Note that the FreeBSD-base repository is disabled by default.
+#
 
 FreeBSD-ports: {
   url: "pkg+https://pkg.FreeBSD.org/${ABI}/quarterly",
@@ -21,3 +23,10 @@ FreeBSD-ports-kmods: {
   fingerprints: "/usr/share/keys/pkg",
   enabled: yes
 }
+FreeBSD-base: {
+  url: "pkg+https://pkg.FreeBSD.org/${ABI}/base_latest",
+  mirror_type: "srv",
+  signature_type: "fingerprints",
+  fingerprints: "/usr/share/keys/pkg",
+  enabled: no
+}

usr.sbin/pkg/FreeBSD.conf.quarterly-release

@@ -6,6 +6,8 @@
 #   echo "FreeBSD-ports: { enabled: no }" > /usr/local/etc/pkg/repos/FreeBSD.conf
 #   echo "FreeBSD-ports-kmods: { enabled: no }" >> /usr/local/etc/pkg/repos/FreeBSD.conf
 #
+# Note that the FreeBSD-base repository is disabled by default.
+#
 
 FreeBSD-ports: {
   url: "pkg+https://pkg.FreeBSD.org/${ABI}/quarterly",
@@ -21,3 +23,10 @@ FreeBSD-ports-kmods: {
   fingerprints: "/usr/share/keys/pkg",
   enabled: yes
 }
+FreeBSD-base: {
+  url: "pkg+https://pkgbase.FreeBSD.org/${ABI}/base_release_${VERSION_MINOR}",
+  mirror_type: "srv",
+  signature_type: "fingerprints",
+  fingerprints: "/usr/share/keys/pkgbase-${VERSION_MAJOR}",
+  enabled: no
+}