[cipd] Bump cipd and vpython 550cea2b9a -> aacec5af4d.

2018-06-26 vadimsh [cipd] Do not barf on -pkg-var when using -in.
2018-06-26 vadimsh [cipd] Fix and improve output of ensure-file-verify.
2018-06-26 vadimsh [cipd] Fix hanging in 'ensure-file-verify' if the ensure file is broken.

R=iannucci@chromium.org, tandrii@chromium.org
BUG=801423

Change-Id: Ic48753e30f2412f214ebfb73bb7693e5834cdbf7
Reviewed-on: https://chromium-review.googlesource.com/1115464Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Vadim Shtayura <vadimsh@chromium.org>

cipd_client_version

-git_revision:550cea2b9ab6435ff75afff819ae6fca2e14e99e
+git_revision:aacec5af4d569cee51437a89425db0b3c3d39a0a

cipd_manifest.txt

@@ -12,7 +12,7 @@ $VerifiedPlatform linux-386 linux-ppc64 linux-ppc64le linux-s390x
 $VerifiedPlatform linux-arm64 linux-armv6l linux-mips64
 
 # vpython.
-infra/tools/luci/vpython/${platform}  git_revision:550cea2b9ab6435ff75afff819ae6fca2e14e99e
+infra/tools/luci/vpython/${platform} git_revision:aacec5af4d569cee51437a89425db0b3c3d39a0a
 
 # LUCI editor
 infra/tools/luci/led/${platform} git_revision:7ba61969ccbe1f9679661555f72ca947da508a70