Changed method to detect if composer self-update is needed.

php/composer.sls

     - require:
       - file: get-composer
 
-# Get COMPOSER_DEV_WARNING_TIME from the installed composer, and if that time has passed
+# Get composer version date and check if older than 60day (defaultvalue of COMPOSER_DEV_WARNING_TIME)
 # then it's time to run `composer selfupdate`
 #
 # It would be nice if composer had a command line switch to get this, but it doesn't,
 update-composer:
   cmd.run:
     - name: "{{ install_file }} selfupdate"
-    - unless: test $(grep --text COMPOSER_DEV_WARNING_TIME {{ install_file }} | egrep '^\s*define' | sed -e 's,[^[:digit:]],,g') \> $(php -r 'echo time();')
+    - unless: test $(date -d "60 days $({{ install_file }} --version | cut -d ' ' -f 4,5)" "+%s") \> $(date "+%s")
     - cwd: {{ php.local_bin }}
     - env:
       - HOME: {{ salt_user_home }}

php/ng/composer.sls

     - require:
       - file: get-composer
 
-# Get COMPOSER_DEV_WARNING_TIME from the installed composer, and if that time has passed
+# Get composer version date and check if older than 60day (defaultvalue of COMPOSER_DEV_WARNING_TIME)
 # then it's time to run `composer selfupdate`
 #
 # It would be nice if composer had a command line switch to get this, but it doesn't,
 update-composer:
   cmd.run:
     - name: "{{ install_file }} selfupdate"
-    - unless: test $(grep --text COMPOSER_DEV_WARNING_TIME {{ install_file }} | egrep '^\s*define' | sed -e 's,[^[:digit:]],,g') \> $(php -r 'echo time();')
+    - unless: test $(date -d "60 days $({{ install_file }} --version | cut -d ' ' -f 4,5)" "+%s") \> $(date "+%s")
     - cwd: {{ php.lookup.pkgs.local_bin }}
     - env:
       - HOME: {{ salt_user_home }}