Add new values to read for V2 protocol only (TANGODEVIC-1933)

doc/doc_html/CryoCooler/Attributes.html

doc/doc_html/LN2Pump/Attributes.html

doc/doc_html/Level/Attributes.html

doc/doc_html/Level/Description.html

doc/doc_html/Level/DevCommands.html

doc/doc_html/Level/DevCommandsFrame.html

doc/doc_html/Level/DevCommandsList.html

doc/doc_html/Level/DevCommandsTable.html

doc/doc_html/Level/Properties.html

doc/doc_html/Level/TangoDevStates.html

doc/doc_html/Level/index.html

pom.xml

src/CryoCooler.cpp

src/CryoCooler.h

src/CryoCoolerClass.cpp

src/CryoCoolerClass.h

src/CryoCoolerInterface.cpp

src/CryoCoolerStateMachine.cpp

src/HeaterVesselClass.cpp

src/LN2.cpp