[Lizmap] Adding external WMS/WMTS to lizMap.map object

[igor.buczak at envirosolutions.pl]

Hi,
I'm using LizMap in versions 3.4.0 to 3.4.2 and I would like to add a 
WMS/WMTS baselayer using JavaScript.
The problem is when I set projection for the layer other than 
lizMap.map.projection ('EPSG:3857') - I can't see requested WMS/WMTS 
image, because map object send request using coordinates from map 
projection.

For example, adding WMS baselayer:
_wmsLayer = new OpenLayers.Layer.WMS("testWMS",_
_    "http://vmap0.tiles.osgeo.org/wms/vmap0", {_
_        layers: 'basic'_
_    }, {_
_ isBaseLayer: true_
_ , projection : new OpenLayers.Projection('EPSG:4269')_
_ , gutter: 5_
_ , buffer : 0_
_ , singleTile : true_
_ , ratio : 1_
_ });_
_lizMap.map.addLayer(wmsLayer);_
_lizMap.baselayers.push(wmsLayer)_
_var newOption = $(`<option value="testWMS">testWMS</option>`)_
_$('#switcher-baselayer-select').append(newOption);_
_var blName = lizMap.map.getLayersByName('testWMS')[0];_
_lizMap.map.setBaseLayer(blName);_

When added baselayer is active, map request for the image:
_http://vmap0.tiles.osgeo.org/wms/vmap0?LAYERS=basic&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&FORMAT=image%2Fjpeg&SRS=EPSG%3A4269&BBOX=2012355.2261495434,6338336.899867127,2323301.0571703566,6627268.866744874&WIDTH=1004&HEIGHT=943 
[1]_

But it won't work, because requested BBOX 
(_2012355.2261495434,6338336.899867127,2323301.0571703566,6627268.866744874_) 
is wrong, it should be (18.0772944,49.3726875,20.87056861,51.03376694):
http://vmap0.tiles.osgeo.org/wms/vmap0?LAYERS=basic&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&FORMAT=image%2Fjpeg&SRS=EPSG%3A4269&BBOX=18.0772944,49.3726875,20.87056861,51.03376694&WIDTH=1004&HEIGHT=943

Is there any way to add WMS/WMTS served in a different coordinate 
system?

Thanks in advance for any help,
Igor

Links:
------
[1] 
http://vmap0.tiles.osgeo.org/wms/vmap0?LAYERS=basic&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&FORMAT=image%2Fjpeg&SRS=EPSG%3A4269&BBOX=2167809.179245145,6482785.2942039985,2167846.6513039283,6482820.48957395&WIDTH=1004&HEIGHT=943
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