* fix: correct value for config path and robustify
The hardcoded, initial value for the configuration path was set to
`.faas/config`. But `configPath()` immediately sets this to the correct
value of ~/.config. Both the create and init commands use `configPath()`
to search for additional templates, if they exist, and were each doing
`filepath.Join(configPath(), "faas", "templates")`. This commit also
changes `configPath()` so that it is `~/.config/faas` and does so in a
cross platform friendly way. If the `$HOME` directory cannot be
determined, the config is assumed to be at `./.config/faas`.
* squash: remove config variable entirely
The CLI commands all printed confirmation prompts for the various flags
they exposed. This commit modifies that logic, so that there is no longer
a `-y` flag, but instead a `--confirm` or `-c` flag for each command, and
prompts are only displayed if using this flag. In most cases, the derived
values are printed even if not prompted for.
In call cases where the user is prompted, I have removed the "Verbose"
prompt, as that seems less like a configuration option that needs to be
confirmed, and more like just a CLI option for the current run which we
can just accept as-is.
The text for the prompts has also been reduced to one or two words.
Also added are some checks around image naming and repositories, short
circuiting failures that could occur if these are not specified or are
unknown. For example, if a user does `faas init` and then `faas deploy`
we don't yet know what the image name should be - one hasn't been built.
Fixes: https://github.com/boson-project/faas/issues/91
Fixes: https://github.com/boson-project/faas/issues/90
Fixes: https://github.com/boson-project/faas/issues/89
- Replaces globally-scoped formatter function with methods
- Defines enumerated Format types
- Renames the 'output' flag 'format' due to confusion with command file descriptors
- FunctionDescription now Function
- Global verbose flag replaced with config struct based value throughout
* Add version subcommand
* Update builtin version template to raw version number output
* Prefix environment variables with "FAAS_" namespace
* Combine Execute with root.