Dynamic association compared to RSSI 0dB (1mW) on init and will not select any eNB

[stefanSchuhbaeck]

The candidateMasterRssi_ is initialized to 0 during initialization line 44. If dynamicCellAssociation is true the calculated RSSI is compared here to the initial value of 0dBm which is never reached, thus no association takes place. Initializing candiatemasterRssi_ with e.g. -120dB will select the 'best' eNB during association, even if communication is not possible because of bad RSSI value.