balg02: Add guix-north-america as a cuirass channel spec

* .guix/guix-na/config/balg02.scm: Extended %cuirass-specs, adding this channel itself as a
cuirass specification. This allows for change to this configuration
channel (guix-north-america) to be validated before deployment. Further, it could be extended
to build operating-system images for balg02 and any other machines, and even running tests on
them to ensure they will deploy and function as expected.

.guix/guix-na/config/balg02.scm

@@ -36,7 +36,20 @@
              (name "guix")
              (priority 0)
              (build '(channels guix))
-             (channels %default-channels))))
+             (channels %default-channels))
+          (specification
+           (name "guix-north-america")
+           (build '(channels guix-north-america))
+           (channels
+            (cons* (channel
+                    (name 'guix-north-america)
+                    (url "https://git.rekahsoft.ca/rekahsoft/guix-north-america.git")
+                    (introduction
+                     (make-channel-introduction
+                      "c0979ad86fdf0b403c60d5767328cb862ecc00ef"
+                      (openpgp-fingerprint
+                       "F8D5 46F3 AF37 EF53 D1B6  48BE 7B4D EB93 212B 3022"))))
+                   %default-channels)))))
 
 ;; Taken from https://git.savannah.gnu.org/cgit/guix/maintenance.git/tree/hydra/berlin.scm
 (define (anonip-service file)