travis: Whitespace fixes

Signed-off-by: Andrea Bolognani <abologna@redhat.com>

.travis.yml

@@ -3,7 +3,7 @@ language: generic
 
 branches:
   except:
-  - /^.*-maint$/
+    - /^.*-maint$/
 
 matrix:
   include:
@@ -59,7 +59,6 @@ matrix:
         - find -name test-suite.log | xargs cat
         - echo '=== LOG FILE(S) END ==='
 
-
 git:
   submodules: true