Fix rotating secret with TTL=0 to use exponential backoff retry instead of 1 sec#2134

aswanidutt wants to merge 14 commits intomainhashicorp/consul-template:mainfrom

aswanidutt/VAULT-38829-Vault-Agent-does-not-back-offhashicorp/consul-template:aswanidutt/VAULT-38829-Vault-Agent-does-not-back-offCopy head branch name to clipboard