Flux source-controller OOM'ing

Observed with k9s:

NAME                     PF READY STATUS   RESTARTS CPU MEM %CPU/R %CPU/L %MEM/R %MEM/L ...
source-controller-..-..  ●  1/1   Running         5   1 813      2    n/a   1288     80 ...

This means that actual use was 12 times (!) the requests and 80% of limits -- which probably explains the restarts.

Some time after deletion, I had memory up to 170% of requests which is already quite a lot.

We need to increase the requests and limits for this controller