bug 344 interpretation of slashes ('/') in URI

If slash (/) should be part of path parameter from URI it can be specified with %2F
placeholder.
e.g. list which key is "ke/y_1" CAN'T be specified as
list_name/ke/y_1
but should be constructed as
list_name/ke%2Fy_1

It is also necessary to add to target distribution folder
/opendaylight/configuration/config.ini
following line
org.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true

Change-Id: Id07e7969247f3b60a44b808c95dac6375cebc011
Signed-off-by: Jozef Gloncak <jgloncak@cisco.com>