[FAB-5434] Fix mysql config in fvt image

Ubuntu 16.04.1 recently updated the default
mysql-server package to version 5.7.19.
This is causing fvt tests in CI to fail
on x86_64 (s390x uses Debian Jessie which
uses mysql 5.5.55 so is not affected).

This change is based on work in the
mysql images available on Dockerhub.
The change basically dismisses the
postInstall config and initializes
the database and sets the password
when the image starts up.

Change-Id: Ia8cb6a7faa77a5712a8ebf4d061215186c491e5e
Signed-off-by: Gari Singh <[email protected]>

images/fabric-ca-fvt/start.sh

@@ -7,11 +7,22 @@
 
 POSTGRES_PORT=5432
 MYSQL_PORT=3306
+MYSQL_VERSION=`mysqld --version|awk '{print $3}'`
 LDAP_PORT=389
 PORTS=($POSTGRES_PORT $MYSQL_PORT $LDAP_PORT)
 
 timeout=12
 su postgres -c 'postgres -D /usr/local/pgsql/data' &
+# we need to check the version of mysql as behavior has changed with 5.7.19+
+if [[ $MYSQL_VERSION == 5.7* ]] ;
+then
+  echo "detected mysql version ${MYSQL_VERSION}"
+  rm -rf /var/lib/mysql && mkdir -p /var/lib/mysql /var/run/mysqld \
+    && chown -R mysql:mysql /var/lib/mysql /var/run/mysqld \
+    && chmod 777 /var/run/mysqld
+  mysqld --initialize-insecure
+fi
+
 /usr/bin/mysqld_safe --sql-mode=STRICT_TRANS_TABLES &
 /etc/init.d/slapd start &
 
@@ -24,4 +35,11 @@ for port in ${PORTS[*]}; do
    done
 done
 
+if [[ $MYSQL_VERSION == 5.7* ]] ;
+then
+  # Set mysql root password
+  sleep 3
+  mysqladmin -u root password mysql
+fi
+
 exec "$@"