py-pbr: update to 5.1.3

- install files in post-destroot

python/py-pbr/Portfile

@@ -4,7 +4,8 @@ PortSystem          1.0
 PortGroup           python 1.0
 
 name                py-pbr
-version             5.1.2
+version             5.1.3
+revision            0
 categories-append   devel
 platforms           darwin
 supported_archs     noarch
@@ -25,13 +26,22 @@ homepage            https://docs.openstack.org/pbr/latest/
 master_sites        pypi:p/pbr
 distname            pbr-${version}
 
-checksums           rmd160  cbe394431bc60cee5571129804c540324398105a \
-                    sha256  d717573351cfe09f49df61906cd272abaa759b3e91744396b804965ff7bff38b \
-                    size    115789
+checksums           rmd160  b3ca8b90ad89430c3c9625cd2cb3e2c5bd0d0744 \
+                    sha256  8c361cc353d988e4f5b998555c88098b9d5964c2e11acf7b0d21925a66bb5824 \
+                    size    115241
 
 python.versions     27 34 35 36 37
 
 if {${subport} ne ${name}} {
     depends_lib-append  port:py${python.version}-setuptools
+
+    post-destroot {
+        set docdir ${prefix}/share/doc/${subport}
+        xinstall -d ${destroot}${docdir}
+        xinstall -m 0644 -W ${worksrcpath} README.rst LICENSE \
+            CONTRIBUTING.rst ChangeLog AUTHORS \
+            ${destroot}${docdir}
+    }
+
     livecheck.type      none
 }