Add richer access log format to keystone

This change improves the logging format for keystone by adding
request time and request size information.

Test plan:

PASS: Run a full build, install, bootstrap and unlock.
      Install DC system with subclouds. Fm alarm list.
PASS: Verify that /var/log/keystone/keystone.log has information
      in the format specified.

Story: 2011106
Task: 51139

Change-Id: I29736224181205e3adbae675f8449868aba138ac
Signed-off-by: Rei Oliveira <Reinildes.JoseMateusOliveira@windriver.com>

openstack/keystone/debian/deb_patches/0001-Add-stx-support.patch

@@ -127,7 +127,7 @@ new file mode 100644
 index 000000000..de339caa6
 --- /dev/null
 +++ b/debian/stx/keystone-all
-@@ -0,0 +1,157 @@
+@@ -0,0 +1,159 @@
 +#!/bin/sh
 +# Copyright (c) 2013-2018 Wind River Systems, Inc.
 +#
@@ -171,9 +171,10 @@ index 000000000..de339caa6
 +THREADS=2
 +# Increased timeout to facilitate large image uploads
 +TIMEOUT="200"
++ACCESS_LOGS_FORMAT='%(h)s %(u)s "%(r)s" status=%(s)s length=%(b)s UA="%(a)s" time_ms="%(M)s"'
 +
 +# Calculate the no of workers based on the number of workers retrieved by
-+# Platform Eng which is retreived from the keystone-extra.conf
++# Platform Eng which is retrieved from the keystone-extra.conf
 +
 +if [ "$system_type" == "All-in-one" ]; then
 +    TIS_WORKERS_FACTOR=1
@@ -223,7 +224,8 @@ index 000000000..de339caa6
 +        --make-pidfile --exec ${PYTHON} -- ${EXEC} --bind ${BIND_PUBLIC} \
 +        --worker-class ${WORKER} --workers ${TIS_WORKERS} --threads ${THREADS} \
 +        --timeout ${TIMEOUT} --max-requests ${MAX_REQUESTS} \
-+        --max-requests-jitter ${MAX_REQ_JITTER_PUBLIC} --log-syslog  \
++        --max-requests-jitter ${MAX_REQ_JITTER_PUBLIC} \
++        --log-syslog --access-logformat "${ACCESS_LOGS_FORMAT}" \
 +        --pythonpath '/usr/share/keystone' public:application --name keystone-public
 +
 +    RETVAL=$?