cleanups for f25 implementation

use f25-build as the runroot channel. whats most important is the
packages that are installed into the install environments rather
than the install environment. Disable macboot on Cloud tree as it
does not target macs at all

Signed-off-by: Dennis Gilmore <dennis@ausil.us>

fedora-atomic.conf

@@ -9,7 +9,7 @@ buildinstall_method = 'lorax'
 lorax_options = [
   ('^.*$', {
      'x86_64': {
-         'nomacboot': False
+         'nomacboot': True
      }
      '*': {
          'noupgrade': True
@@ -35,7 +35,7 @@ hashed_directories = True
 runroot = True
 #runroot_channel = 'fedora_compose'
 runroot_channel = 'compose'
-runroot_tag = 'f25-build-with-newer-ostree'  # TODO
+runroot_tag = 'f25-build'
 # PKGSET
 pkgset_source = 'koji' # koji, repos
 pkgset_koji_tag = 'f25-atomic'