Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 58d17e818ac63bc5369a227611137653faedb1c6
  - Mount /home/xtesting/.aws/config

    It allows overriding request_checksum_calculation
    for artifacts.opnfv.org

    [default]
    request_checksum_calculation = WHEN_REQUIRED
    response_checksum_validation = WHEN_REQUIRED

    Change-Id: Ie09e78e52f0699b3738f4f9f02c52d4d2469c12a
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index f7773c3..58d17e8 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit f7773c360e6d171551208768b407b747f7980989
+Subproject commit 58d17e818ac63bc5369a227611137653faedb1c6