Replace secrets with credentials in comments

In comments in templates for `config/database.yml`, there is a
reference to `secrets.yml` which is now deprecated.
They should be replaced with `credentials.yml` so that everyone
using latest Rails can understand.

railties/lib/rails/generators/rails/app/templates/config/databases/frontbase.yml.tt

@@ -24,7 +24,7 @@ test:
   <<: *default
   database: <%= app_name %>_test
 
-# As with config/secrets.yml, you never want to store sensitive information,
+# As with config/credentials.yml, you never want to store sensitive information,
 # like your database password, in your source code. If your source code is
 # ever seen by anyone, they now have access to your database.
 #

railties/lib/rails/generators/rails/app/templates/config/databases/ibm_db.yml.tt

@@ -60,7 +60,7 @@ test:
   <<: *default
   database: <%= app_name[0,4] %>_tst
 
-# As with config/secrets.yml, you never want to store sensitive information,
+# As with config/credentials.yml, you never want to store sensitive information,
 # like your database password, in your source code. If your source code is
 # ever seen by anyone, they now have access to your database.
 #

railties/lib/rails/generators/rails/app/templates/config/databases/jdbc.yml.tt

@@ -54,7 +54,7 @@ test:
   <<: *default
   url: jdbc:db://localhost/<%= app_name %>_test
 
-# As with config/secrets.yml, you never want to store sensitive information,
+# As with config/credentials.yml, you never want to store sensitive information,
 # like your database password, in your source code. If your source code is
 # ever seen by anyone, they now have access to your database.
 #

railties/lib/rails/generators/rails/app/templates/config/databases/jdbcmysql.yml.tt

@@ -27,7 +27,7 @@ test:
   <<: *default
   database: <%= app_name %>_test
 
-# As with config/secrets.yml, you never want to store sensitive information,
+# As with config/credentials.yml, you never want to store sensitive information,
 # like your database password, in your source code. If your source code is
 # ever seen by anyone, they now have access to your database.
 #

railties/lib/rails/generators/rails/app/templates/config/databases/jdbcpostgresql.yml.tt

@@ -43,7 +43,7 @@ test:
   <<: *default
   database: <%= app_name %>_test
 
-# As with config/secrets.yml, you never want to store sensitive information,
+# As with config/credentials.yml, you never want to store sensitive information,
 # like your database password, in your source code. If your source code is
 # ever seen by anyone, they now have access to your database.
 #

railties/lib/rails/generators/rails/app/templates/config/databases/mysql.yml.tt

@@ -32,7 +32,7 @@ test:
   <<: *default
   database: <%= app_name %>_test
 
-# As with config/secrets.yml, you never want to store sensitive information,
+# As with config/credentials.yml, you never want to store sensitive information,
 # like your database password, in your source code. If your source code is
 # ever seen by anyone, they now have access to your database.
 #

railties/lib/rails/generators/rails/app/templates/config/databases/oracle.yml.tt

@@ -33,7 +33,7 @@ test:
   <<: *default
   database: <%= app_name %>_test
 
-# As with config/secrets.yml, you never want to store sensitive information,
+# As with config/credentials.yml, you never want to store sensitive information,
 # like your database password, in your source code. If your source code is
 # ever seen by anyone, they now have access to your database.
 #

railties/lib/rails/generators/rails/app/templates/config/databases/postgresql.yml.tt

@@ -59,7 +59,7 @@ test:
   <<: *default
   database: <%= app_name %>_test
 
-# As with config/secrets.yml, you never want to store sensitive information,
+# As with config/credentials.yml, you never want to store sensitive information,
 # like your database password, in your source code. If your source code is
 # ever seen by anyone, they now have access to your database.
 #

railties/lib/rails/generators/rails/app/templates/config/databases/sqlserver.yml.tt

@@ -26,7 +26,7 @@ test:
   <<: *default
   database: <%= app_name %>_test
 
-# As with config/secrets.yml, you never want to store sensitive information,
+# As with config/credentials.yml, you never want to store sensitive information,
 # like your database password, in your source code. If your source code is
 # ever seen by anyone, they now have access to your database.
 #