* rename hpgit to git-upstream
* rename import-upstream commadn to import
* change all occurrences of hpgit and import-upstream in code,
comments and tests
* code cleanup (remove some typos, improve PEP8 compliance)
* change license from "HP propietary" to "Apache License v2.0"
Change-Id: Ia4f00d662d79ac9725316027a65f4d23ebbd0f02
JIRA:CICD-1319
JIRA:CICD-1318
Add bash autocomplete code based on the argcomplete package.
The file 'bash_completion/hpgit' should be copied in
'/etc/bash_completion.d/' but this require root priviledges.
Change-Id: I2c6133a0d9677d6f91fd6c96ceb4e84eda3c75ac
JIRA: CICD-261