Deploy on Syscoin Rollux Testnet

[guidiaz]

https://sys-labs.github.io/community-hub/docs/useful-tools/networks/#rollux-tanenbaum-testnet

[guidiaz]

Related PRs:

• https://github.com/witnet/witnet-solidity-bridge/pull/379
• https://github.com/witnet/witnet-feeds/pull/21
• https://github.com/witnet/witnet-price-feeds/pull/302
• https://github.com/witnet/data-feeds-explorer/pull/345
• https://github.com/otherplane/bridge-iac/pull/122

[guidiaz]

Added addresses and links to https://docs.witnet.io

[guidiaz]

Pending to add this envar to DFE host: SYSCOIN_ROLLUX_TESTNET_PROVIDER="https://rpc-tanenbaum.rollux.com"

[guidiaz]

Block explorer is out of service, so contracts weren't verified yet.