The NEC says that signal cable can share a raceway with power - AS LONG AS THE INSULATION ON THE SIGNAL CABLE IS THE SAME AS THAT OF THE POWER CABLE.
No Sam, in this case that's not true and it really applies in only a few cases. I get this exact queston all the time though sometimes it's speakers instead of cameras.
The "reclassified" wiring or cable has to be functionally necessary for the operation of whatever the line voltage conductors power that it is run with. An example of that would be LV control wiring going to an A/C unit. You are allowed to reclassify a CL2 circuit to Class 1 and use TFFN or THHN for the LV within the wiring box on the unit- which also contains the line voltage to power it.
No way is a camera necessary for the operation of the lamps on a light pole.
The only way to comply with the code is to enclose the power conductors in conduit or sealtite within the light pole. This would require suitable connectors and wiring boxes at the top and bottom that encloses the conductors.
Once you do this the pole becomes a chase and you can run CL2 or CM cable within the pole.
Using tray cable is not the answer.
Fiber often is the only alternative.
-Hal