Enable ipv6 on AWS

Author: hughcapet

postgres-appliance/build_scripts/patroni_wale.sh

@@ -40,7 +40,7 @@ if [ "$DEMO" != "true" ]; then
     find /usr/share/python-babel-localedata/locale-data -type f ! -name 'en_US*.dat' -delete
 
     pip3 install filechunkio protobuf \
-            'git+https://github.com/zalando-pg/wal-e.git#egg=wal-e[aws,google,swift]' \
+            'git+https://github.com/zalando-pg/wal-e.git@ipv6-imds#egg=wal-e[aws,google,swift]' \
             'git+https://github.com/zalando/pg_view.git@master#egg=pg-view'
 
     # https://github.com/wal-e/wal-e/issues/318

postgres-appliance/runit/patroni/run

@@ -24,7 +24,7 @@ then
 fi
 
 # Only small subset of environment variables is allowed. We don't want accidentally disclose sensitive information
-for E in $(printenv -0 | tr '\n' ' ' | sed 's/\x00/\n/g' | grep -vE '^(KUBERNETES_(SERVICE|PORT|ROLE)[_=]|((POD_(IP|NAMESPACE))|HOSTNAME|PATH|PGHOME|LC_ALL|ENABLE_PG_MON)=)' | sed 's/=.*//g'); do
+for E in $(printenv -0 | tr '\n' ' ' | sed 's/\x00/\n/g' | grep -vE '^((AWS_EC2_METADATA_SERVICE_ENDPOINT|KUBERNETES_(SERVICE|PORT|ROLE))[_=]|((POD_(IP|NAMESPACE))|HOSTNAME|PATH|PGHOME|LC_ALL|ENABLE_PG_MON)=)' | sed 's/=.*//g'); do
     unset $E
 done