Travis: call all.sh for sanity checks

Different releases have different sets of sanity checks. Keep the list
in one place, namely all.sh.

Signed-off-by: Gilles Peskine <[email protected]>

.travis.yml

@@ -16,13 +16,7 @@ jobs:
       install:
         - pip install pylint==2.4.4
       script:
-        - tests/scripts/recursion.pl library/*.c
-        - tests/scripts/check-generated-files.sh
-        - tests/scripts/check-doxy-blocks.pl
-        - tests/scripts/check-names.sh
-        - tests/scripts/check-files.py
-        - tests/scripts/doxygen.sh
-        - tests/scripts/check-python-files.sh
+        - tests/scripts/all.sh -k 'check_*'
 
     - name: default configuration
       script: