This commit introduced the basic URI rewrite. It allows users to change request URI. Note the "rewrite" option ignores the contained query if any and the query from the request is preserverd.
An example:
"routes": [
    {
        "match": {
            "uri": "/v1/test"
        },
        "action": {
            "return": 200
        }
    },
    {
        "action": {
            "rewrite": "/v1$uri",
            "pass": "routes"
        }
    }
]

Reviewed-by: Alejandro Colomar <alx@nginx.com>

Pp is used to separate paragraphs, not to introduce them.  A Pp macro
call right after Sh is wrong, and it is ignored by the formatter, which
reports a warning about it.

Signed-off-by: Alejandro Colomar <alx@nginx.com>

Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>

The Authors section is meant to list the main authors.  However, the
section only contained the copyright notice, so the Copyright section
seems more appropriate.  While we change that, it makes sense to also
specify the license, and update the copyright year.

Reviewed-by: Liam Crilly <liam@nginx.com>
Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>

We've applied significant changes to the page, so let's update the date.
While we're at it, let's change it to use ISO 8601 format for the date.

Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>

Not setting it produces the default value of 'BSD' or 'GNU', depending
on the software formatting the manual page.  We're neither, so let's
specify our project name.  See groff_mdoc(7).  While mandoc_mdoc(7)
formally says that .Os is only for the operating system, and not for the
package name, that's an oversimplification, and only meant for software
inherent to the OS.  For portable software, mandoc(1)'s (and OpenBSD's)
maintainer Ingo Schwarze agreed that it is more sensible to specify the
project name (and optionally, the version).

Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>