cam plugins variables

[nikkymen]

I think there's a bug in the camera plugins - there's not enough variable query in them:

header_auth=$(uci -q get telegramopenwrt.ipcam.header_auth)
ipaddr=$(uci -q get telegramopenwrt.ipcam.ipaddr)
user=$(uci -q get telegramopenwrt.ipcam.user)
passwd=$(uci -q get telegramopenwrt.ipcam.passwd)