[buildbot] phase2: prefer IPv4 for remote rsync operations

[LEDE Commits]

jow pushed a commit to buildbot.git, branch master:
https://git.lede-project.org/b936cb97eeb52376bea26188fa2c689b9ba64871

commit b936cb97eeb52376bea26188fa2c689b9ba64871
Author: Jo-Philipp Wich <jo at mein.io>
AuthorDate: Tue Aug 22 19:15:07 2017 +0200

    phase2: prefer IPv4 for remote rsync operations
    
    Various build slaves tend to have slow or unrelaible IPv6 connectivity
    so instruct rsync to prefer IPv4 for file transfer.
    
    Signed-off-by: Jo-Philipp Wich <jo at mein.io>
---
 phase2/master.cfg | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/phase2/master.cfg b/phase2/master.cfg
index df0146f..5fcf3d3 100644
--- a/phase2/master.cfg
+++ b/phase2/master.cfg
@@ -270,7 +270,7 @@ for arch in arches:
 	factory.addStep(ShellCommand(
 		name = "downloadsdk",
 		description = "Downloading SDK archive",
-		command = ["rsync", "-va", "%s/%s/%s/%s" %(rsync_sdk_url, ts[0], ts[1], rsync_sdk_pat), "sdk.archive"],
+		command = ["rsync", "-4", "-va", "%s/%s/%s/%s" %(rsync_sdk_url, ts[0], ts[1], rsync_sdk_pat), "sdk.archive"],
 		env={'RSYNC_PASSWORD': rsync_sdk_key},
 		haltOnFailure = True,
 		logEnviron = False))
@@ -387,7 +387,7 @@ for arch in arches:
 		name = "uploadprepare",
 		description = "Preparing package directory",
 		workdir = "build/sdk",
-		command = ["rsync", "-av", "--include", "/%s/" %(arch[0]), "--exclude", "/*", "--exclude", "/%s/*" %(arch[0]), "bin/packages/", WithProperties("%s/packages%%(suffix)s/" %(rsync_bin_url), suffix=GetDirectorySuffix)],
+		command = ["rsync", "-4", "-av", "--include", "/%s/" %(arch[0]), "--exclude", "/*", "--exclude", "/%s/*" %(arch[0]), "bin/packages/", WithProperties("%s/packages%%(suffix)s/" %(rsync_bin_url), suffix=GetDirectorySuffix)],
 		env={'RSYNC_PASSWORD': rsync_bin_key},
 		haltOnFailure = True,
 		logEnviron = False
@@ -397,7 +397,7 @@ for arch in arches:
 		name = "packageupload",
 		description = "Uploading package files",
 		workdir = "build/sdk",
-		command = ["rsync", "--progress", "--delete", "--checksum", "--delay-updates", "--partial-dir=.~tmp~%s" %(arch[0]), "-avz", "bin/packages/%s/" %(arch[0]), WithProperties("%s/packages%%(suffix)s/%s/" %(rsync_bin_url, arch[0]), suffix=GetDirectorySuffix)],
+		command = ["rsync", "-4", "--progress", "--delete", "--checksum", "--delay-updates", "--partial-dir=.~tmp~%s" %(arch[0]), "-avz", "bin/packages/%s/" %(arch[0]), WithProperties("%s/packages%%(suffix)s/%s/" %(rsync_bin_url, arch[0]), suffix=GetDirectorySuffix)],
 		env={'RSYNC_PASSWORD': rsync_bin_key},
 		haltOnFailure = True,
 		logEnviron = False
@@ -407,7 +407,7 @@ for arch in arches:
 		name = "logprepare",
 		description = "Preparing log directory",
 		workdir = "build/sdk",
-		command = ["rsync", "-av", "--include", "/%s/" %(arch[0]), "--exclude", "/*", "--exclude", "/%s/*" %(arch[0]), "bin/packages/", "%s/faillogs/" %(rsync_bin_url)],
+		command = ["rsync", "-4", "-av", "--include", "/%s/" %(arch[0]), "--exclude", "/*", "--exclude", "/%s/*" %(arch[0]), "bin/packages/", "%s/faillogs/" %(rsync_bin_url)],
 		env={'RSYNC_PASSWORD': rsync_bin_key},
 		haltOnFailure = True,
 		logEnviron = False
@@ -433,7 +433,7 @@ for arch in arches:
 		name = "logupload",
 		description = "Uploading failure logs",
 		workdir = "build/sdk",
-		command = ["rsync", "--progress", "--delete", "--delay-updates", "--partial-dir=.~tmp~%s" %(arch[0]), "-avz", "faillogs/", "%s/faillogs/%s/" %(rsync_bin_url, arch[0])],
+		command = ["rsync", "-4", "--progress", "--delete", "--delay-updates", "--partial-dir=.~tmp~%s" %(arch[0]), "-avz", "faillogs/", "%s/faillogs/%s/" %(rsync_bin_url, arch[0])],
 		env={'RSYNC_PASSWORD': rsync_bin_key},
 		haltOnFailure = False,
 		logEnviron = False
@@ -444,7 +444,7 @@ for arch in arches:
 			name = "sourceupload",
 			description = "Uploading source archives",
 			workdir = "build/sdk",
-			command = ["rsync", "--progress", "--checksum", "--delay-updates", "--partial-dir=.~tmp~%s" %(arch[0]), "-avz", "dl/", "%s/" %(rsync_src_url)],
+			command = ["rsync", "-4", "--progress", "--checksum", "--delay-updates", "--partial-dir=.~tmp~%s" %(arch[0]), "-avz", "dl/", "%s/" %(rsync_src_url)],
 			env={'RSYNC_PASSWORD': rsync_src_key},
 			haltOnFailure = False,
 			logEnviron = False