added epochdata table load code in cncli.sh

…instead of getProtocolParamsHist

EPOCHS=$(sqlite3 "$BLOCKLOG_DB" "SELECT group_concat(epoch,' ') FROM (SELECT DISTINCT epoch FROM blocklog ORDER BY epoch);")

…rentEpoch, runNextEpoch and runPreviousEpochs

echo "ERROR: Failed to fetch protocol parameters for epoch ${1}.";

2. Requoted "$1" in condition [[ ${epoch} = "$1" ]] && matched=true && break

…op, instead of input "$1"

## Description
1. Changes to the nginx mithril relay LB and squid mithril relay
   * Nginx mithril relay LB:
     * Uses stream protocol
     * proxy_connect_timeout of 10 seconds
     * max_fails set to 1
* fail_timeout set to 10 seconds per relay (20 seconds for 2 relay
configurations, 30 for 3, etc.)
   * Squid mithril relay:
* Change to how ACL's and allow rulesare written for multiple block
producers
* Includes rules for non block producers (other relays, local relay IP,
simplifies testing from other than block producer) etc.
2. Enhances the verify_signer_registered function
* Continues to check if mithril-signer has registered in the current
epoch.
* If the signer has registered for the current epoch it will also check
if the signer registered two epochs earlier and reports if the signer is
valid to sign certificates in the current epoch or not.
3. Adds a new MITHRIL_HOME variable to the
`scripts/cnode-helper-scripts/env` file.
   * Defaults to the current path of `${CNODE_HOME}/mithril`.
* Provides the SPO a way to set a unique path for where mithril
environment and mithril data-stores will be located.
4. Changes to a status code for checks on mithril minimum versions.
Sourced from past conversation w/ @Scitz0
5. Adds functions **semantic_version_check** and
**check_mithril_upgrade_safe**
* GitHub Actions workflow now uses **check_mithril_upgrade_safe**
against the repo `node-latest.txt` to determine if changing
`mithril-latest.xt` is acceptable.
* Not yet implemented in `guild-deploy.sh`, but the
**check_mithril_upgrade_safe** should support both CI Actions and
production node/signer environments. Open for implementation
discussions.

## Where to start?
I'd suggest review of each commit vs. reviewing the files changed. The
commit for **Refactor mithril functions into mithril library.** will be
quite large. There is a general section of functions used by multiple
scripts, and then functions are sorted into blocks by the script that
uses them, client, relay or signer. Each section is alphabetically
sorted.

## Motivation and context
1. Nginx relay/lb
 * Issues with current nginx config reported in Koios support channel.
 * Simplified testing of squid proxy when additional IPs are provided.
* Offline relays were adding 60 second delays until nginx timeouts
occured and LB moved onto the next relay.
 * Tuned the max fails to 1 and fail_timeout 10 seconds * # of relays.
* Temporarily prevents re-using an offline relay if many requests get
sent through the same LB
2. Reduce confusion for new signer users who were not aware signing had
a 2 epoch delay.
3. Flexibility for SPO's to choose their own directories.
4. Past discussions with @Scitz0 
5. Past discussions with @rdlrt 

## How has this been tested?
1. Nginx relay/squid
   * Direct curl requests on the block producer:
`curl -4 --proxy http://127.0.0.1:3132
https://aggregator.release-mainnet.api.mithril.network/aggregator`

* Enabling tcpdump on port 3132 for all (squid) mithril relays,
disabling the first relay in the mithril_relays upstream definition of
the (nginx) mithril relay lb. Then timing the request while watching
traffic from each mithril relay:
`time curl -4 --proxy http://127.0.0.1:3132
https://aggregator.release-mainnet.api.mithril.network/aggregator`.

* The first request takes 10.0x seconds, to succeed, subsequent requests
take sub 1 second and traffic shows round robin over the remaining
online mithril relays. If round robin reaches the offline mithril relay
before the fail_timout has expired it gets skipped and the traffic is
again sent to the first online (second in the list) upstream mithril
relay.

2. Manually
3. Test virtual machines altering path to `/opt/cardano/mithril`
4. Testing locally and in forked repository github actions
5. Testing locally and in forked repository github actions

![image](https://github.com/user-attachments/assets/3838f427-1f38-4808-8188-eb517def0153)

---------

Co-authored-by: RdLrT <[email protected]>

2. replaced first six hours of new epoch condition for function: getLedgerData

3. added print available epochs from blocklog table in blocklog db
 No slots found in blocklog table for epoch 222.
 choose from epochs in list:
  230 252 274 282 299 311 312 316 317 318......

2. changed: sed 's/"//g' >> "$tmpcsv"
   for tr -d '"' >> "$tmpcsv"
on runCurrentEpoch, runNextEpoch, runPreviousEpochs