adds support for databse hosts

The `-h` parameter can now be used to specify a database host to use
instead of implicitely localhost.

Conflicts in rebase to current master:
	src/bin/admin/admin-utils.sh
	src/bin/admin/kea-admin.in

src/bin/admin/admin-utils.sh

@@ -22,7 +22,7 @@ mysql_execute() {
         mysql -N -B  $* -e "${QUERY}"
         retcode=$?
     else
-        mysql -N -B --user=$db_user --password=$db_password -e "${QUERY}" $db_name
+        mysql -N -B --host=$db_host --user=$db_user --password=$db_password -e "${QUERY}" $db_name
         retcode="$?"
     fi
 
@@ -52,7 +52,7 @@ pgsql_execute() {
         retcode=$?
     else
         export PGPASSWORD=$db_password
-        echo $QUERY | psql --set ON_ERROR_STOP=1 -A -t -h localhost -q -U $db_user -d $db_name
+        echo $QUERY | psql --set ON_ERROR_STOP=1 -A -t -h $db_host -q -U $db_user -d $db_name
         retcode=$?
     fi
     return $retcode
@@ -76,7 +76,7 @@ pgsql_execute_script() {
         retcode=$?
     else
         export PGPASSWORD=$db_password
-        psql --set ON_ERROR_STOP=1 -A -t -h localhost -q -U $db_user -d $db_name -f $file
+        psql --set ON_ERROR_STOP=1 -A -t -h $db_host -q -U $db_user -d $db_name -f $file
         retcode=$?
     fi
     return $retcode

src/bin/admin/kea-admin.in

@@ -21,6 +21,7 @@ scripts_dir=${SCRIPTS_DIR_DEFAULT}
 
 # These are the default parameters. They will likely not work in any
 # specific deployment.
+db_host="localhost"
 db_user="keatest"
 db_password="keatest"
 db_name="keatest"
@@ -59,6 +60,7 @@ usage() {
     printf "\n"
     printf "PARAMETERS: Parameters are optional in general, but may be required\n"
     printf "            for specific operation.\n"
+    printf " -h or --host hostname - specifies a hostname of a database to connect to\n"
     printf " -u or --user name - specifies username when connecting to a database\n"
     printf " -p or --password pass - specifies a password when connecting to a database\n"
     printf " -n or --name database - specifies a database name to connect to\n"
@@ -153,7 +155,7 @@ mysql_init() {
     fi
 
     printf "Initializing database using script %s\n" $scripts_dir/mysql/dhcpdb_create.mysql
-    mysql -B --user=$db_user --password=$db_password $db_name < $scripts_dir/mysql/dhcpdb_create.mysql
+    mysql -B --host=$db_host --user=$db_user --password=$db_password $db_name < $scripts_dir/mysql/dhcpdb_create.mysql
     ERRCODE=$?
 
     printf "mysql returned status code $ERRCODE\n"
@@ -260,7 +262,7 @@ mysql_upgrade() {
     for script in ${scripts_dir}/mysql/upgrade*.sh
     do
         echo "Processing $script file..."
-        sh ${script} --user=${db_user} --password=${db_password} ${db_name}
+        sh ${script} --host=${db_host} --user=${db_user} --password=${db_password} ${db_name}
     done
 
     printf "Lease DB version reported after upgrade: "
@@ -292,7 +294,7 @@ pgsql_upgrade() {
     for script in ${scripts_dir}/pgsql/upgrade*.sh
     do
         echo "Processing $script file..."
-        sh ${script} -U ${db_user} -h localhost -d ${db_name}
+        sh ${script} -U ${db_user} -h ${db_host} -d ${db_name}
     done
 
     version=`pgsql_version`
@@ -457,7 +459,7 @@ pgsql_dump() {
 
     # Call psql and redirect output to the dump file. We don't use psql "to csv"
     # as it can only be run as db superuser.
-    echo "$dump_qry" | psql --set ON_ERROR_STOP=1 -t -h localhost -q --user=$db_user --dbname=$db_name -w --no-align --field-separator=',' >$dump_file
+    echo "$dump_qry" | psql --set ON_ERROR_STOP=1 -t -h $db_host -q --user=$db_user --dbname=$db_name -w --no-align --field-separator=',' >$dump_file
     retcode=$?
 
     # Check for errors.
@@ -547,6 +549,16 @@ while [ ! -z "${1}" ]
 do
     option=${1}
     case ${option} in
+        # Specify database host
+        -h|--host)
+            shift
+            db_host=${1}
+            if [ -z ${db_host} ]; then
+                log_error "-h or --host requires a parameter"
+                usage
+                exit 1
+            fi
+            ;;
         # Specify database user
         -u|--user)
             shift