tcp: use tx_put_locked()

and add id to tx debug messages
tests: pass 4KB context to cci_rma()

and verify it when it completes
verbs: add debug when freeing rma_op
verbs: add more debugging

Print out RMA info
Print out more info when sends/rmas fail
verbs: remove rma_op from vep->rma_ops before free

This fixes some heap corruption in the zs_sink app