* Separation of node health and initialization state from rln_relay status. Make (only) health endpoint avail early and install others in the last stage of node setup.
* Proper json report from /health, adjusted and fixed test, added convenient script for checking node health
* Stop wakunode2 if configured rest server cannot be started
* Fix wakuRlnRelay protocol existence check
* Fix typo
* Removed unused imports from touched files.
* Added missing /health test for all
To resolve RLN build issues like this:
```
Building: librln_v0.3.4.a
./scripts/build_rln.sh: line 29: rustup: command not found
Warning: to ensure you are building in a supported repo state, please always run "make update" after "git pull"
(it looks like you've forgotten to do this).
This also applies whenever you switch to a new branch or commit, e.g.: whenever you run "git checkout ...".
Failed to download -rln.tar.gz
./scripts/build_rln.sh: line 42: jq: command not found
error: could not find `Cargo.toml` in `/app` or any parent directory
make: *** [Makefile:131: librln_v0.3.4.a] Error 127
```
Signed-off-by: Jakub Sokołowski <jakub@status.im>