Update locale & twemproxy

On ppc64le, upstream make ci-build resulted in the following error(s) :

Step 18/63 : RUN sudo runuser -l postgres -c     "${POSTGRES_PREFIX}/bin/initdb --pgdata='${POSTGRES_DATA_PREFIX}/data' --auth='trust'" < /dev/null     && sudo runuser -l postgres -c     "${POSTGRES_PREFIX}/bin/postgres -D '${POSTGRES_DATA_PREFIX}/data'"       > /tmp/postgres.log 2>&1 & sleep 5     && sudo runuser -l postgres -c "${POSTGRES_PREFIX}/bin/createdb test"     && sudo runuser -l postgres -c "${POSTGRES_PREFIX}/bin/psql test"
 ---> Running in 9acba8a3c1ee
The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.

initdb: invalid locale settings; check LANG and LC_* environment variables
createdb: could not connect to database template1: could not connect to server: No such file or directory
    Is the server running locally and accepting
    connections on Unix domain socket "/tmp/.s.PGSQL.5432"?

& twemproxy version v0.4.1 cannot be built, as it does not recognize underlying architecture. And is fixed in v0.5.0

config/config.guess: unable to guess system type

This script, last modified 2009-04-27, has failed to recognize
the operating system you are using. It is advised that you
download the most up to date version of the config scripts from

  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
and
  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD

If the version you run (config/config.guess) is already up to date, please
send the following data and any information you think might be
pertinent to <config-patches@gnu.org> in order to provide the needed
information to handle your system.

config.guess timestamp = 2009-04-27

uname -m = ppc64le
uname -r = 4.18.0-240.10.1.el8_3.ppc64le
uname -s = Linux
uname -v = #1 SMP Mon Jan 18 17:21:08 UTC 2021

/usr/bin/uname -p = ppc64le
/bin/uname -X     = 

hostinfo               = 
/bin/universe          = 
/usr/bin/arch -k       = 
/bin/arch              = ppc64le
/usr/bin/oslevel       = 
/usr/convex/getsysinfo = 

UNAME_MACHINE = ppc64le
UNAME_RELEASE = 4.18.0-240.10.1.el8_3.ppc64le
UNAME_SYSTEM  = Linux
UNAME_VERSION = #1 SMP Mon Jan 18 17:21:08 UTC 2021
configure: error: cannot guess build type; you must specify one
configure: error: ./configure failed for contrib/yaml-0.1.4

3scale / apisonator

Update locale & twemproxy #311