Hyphenate words, and always expect double dashes for long options. A
small number of options have entirely new names.
In general I have added aliases for the unhyphenated and single-dashed
varieties, and used mflag's deprecation syntax to make it print a
warning when it sees them. I left some abbreviated options
unhyphenated (e.g., `bufsz`), and the TLS options as-is since they
correspond with Docker options.
NB the deprecation wanrings will mostly get printed to container logs,
since mostly the executables are run in containers. The next step is
to emit warnings from the script for the options mentioned in the
script usage message.
The option `--no-default-ipam` is replaced with
`--no-default-ipalloc`; the former will still work (in a 'last one
wins' way), but its usage message says it's deprecated.
There are two problems with obtaining the proxy status via the normal
proxy endpoint...
1. when TLS is enabled, this requires using TLS at the client end
2. the status URL is mixed in with the docker remote API, which is
rather unclean
There is limited value to having some status output from the proxy,
since all the output is constant.
So instead we log the version and command line args, and in `weave
status` only report whether the proxy is running.
We still want a way to wait for the proxy to start up, and log a nice
error if it dies. We do this by polling the docker logs for a startup
message.
Fixes#877. Fixes#876.
Undoes most of #756, #800, #854.
Caveats:
* TLS files must be present on the target server (and readable)
* TLS file paths cannot contain spaces
* TLS file paths must be absolute (i.e. cannot be relative)
* Bash argument parsing is terrible
Michael Bridgen