Rename --bundle to --file

This renames the '--bundle' flag for docker (stack) deploy
to be consistent with 'docker build'.

Note that there's no shorthand '-f' added for now,
because this may be confusing on 'docker stack config',
which also takes a file, and for which we may want to
have a '--format' flag in future.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

docs/reference/commandline/deploy.md

@@ -17,7 +17,7 @@ Usage:  docker deploy [OPTIONS] STACK
 Create and update a stack from a Distributed Application Bundle (DAB)
 
 Options:
-      --bundle string   Path to a Distributed Application Bundle file (Default: STACK.dab)
+      --file   string   Path to a Distributed Application Bundle file (Default: STACK.dab)
       --help            Print usage
 ```
 

docs/reference/commandline/stack_config.md

@@ -17,7 +17,7 @@ Usage:  docker stack config [OPTIONS] STACK
 Print the stack configuration
 
 Options:
-      --bundle string   Path to a Distributed Application Bundle file (Default: STACK.dab)
+      --file   string   Path to a Distributed Application Bundle file (Default: STACK.dab)
       --help            Print usage
 ```
 

docs/reference/commandline/stack_deploy.md

@@ -20,7 +20,7 @@ Aliases:
   deploy, up
 
 Options:
-      --bundle string   Path to a Distributed Application Bundle file (Default: STACK.dab)
+      --file   string   Path to a Distributed Application Bundle file (Default: STACK.dab)
       --help            Print usage
 ```
 

experimental/docker-stacks-and-bundles.md

@@ -44,7 +44,7 @@ Usage:  docker deploy [OPTIONS] STACK
 Create and update a stack
 
 Options:
-  -f, --bundle string   Path to a bundle (Default: STACK.dab)
+      --file   string   Path to a Distributed Application Bundle file (Default: STACK.dab)
       --help            Print usage
 ```