[.travis.yml] make repoman full run stricter

expand -d to full --include-dev (includes dev profiles during check)
add --without-mask to check masked packages
add --xmlparse to force metadata.xml check
add --unmatched-removal for strict check of (un)mask files

.travis.yml

@@ -20,4 +20,4 @@ before_script:
     - ln -s /usr/portage/profiles/default/linux/amd64/17.0 /etc/portage/make.profile
     - cd travis-overlay
 script:
-    - python ../portage-repoman-${repoman_version}/repoman/bin/repoman full -d
+    - python ../portage-repoman-${repoman_version}/repoman/bin/repoman full --include-dev --without-mask --xmlparse --unmatched-removal