upgrade salt to 3004 and update bootstrap-salt.sh

salt/salt/master.defaults.yaml

@@ -2,4 +2,4 @@
 # When updating the salt version, also update the version in securityonion-builds/images/iso-task/Dockerfile and saltify function in so-functions
 salt:
   master:
-    version: 3003
+    version: 3004

salt/salt/minion.defaults.yaml

@@ -2,6 +2,6 @@
 # When updating the salt version, also update the version in securityonion-builds/images/iso-task/Dockerfile and saltify function in so-functions
 salt:
   minion:
-    version: 3003
+    version: 3004
     check_threshold: 3600 # in seconds, threshold used for so-salt-minion-check. any value less than 600 seconds may cause a lot of salt-minion restarts since the job to touch the file occurs every 5-8 minutes by default
-    service_start_delay: 30 # in seconds.
+    service_start_delay: 30 # in seconds.