Use branch name for image builds

See merge request openappstack/bootstrap!63

Add cosmos functions

See merge request openappstack/bootstrap!56

Right now every branch will push to the same image tag,
which brakes deployments from time to time (see
https://code.greenhost.net/openappstack/bootstrap/-/jobs/22571 i.e.).

Ignore all custom settings and inventory files

See merge request openappstack/bootstrap!61

I had multiple custom files for 2 clusters I maintain,
so I wanted to gitignore them all.

Resolve "bootstrap fails if release_name has upper case characters"

Closes #44

See merge request openappstack/bootstrap!52

Resolve "Replace traefik by nginx and cert-manager"

Closes #116

See merge request openappstack/bootstrap!55

Use debian instead of ubuntu

See merge request openappstack/bootstrap!53

This is a prerequisite to properly removing domain records (#114).

- delete_domain_record()
- delete_domain_records_by_name()
- get_domain_records_by_name()

Resolve "Remove keycloak from CI pipeline"

Closes #117

See merge request openappstack/bootstrap!57

Deploy OAS apps to dedicated namespaces

See merge request openappstack/bootstrap!46

Allow production le certs

Closes #91

See merge request openappstack/bootstrap!49

Point to online docs from README.md

Closes #18

See merge request openappstack/bootstrap!44

Use artifacys instead of cache

Closes #98

See merge request openappstack/bootstrap!50

Wait up to 30 mins for LE cert

See merge request openappstack/bootstrap!45

Sometime fetching LE certs take up to 23mins,
see https://code.greenhost.net/openappstack/bootstrap/issues/90#note_48508

Fixes #98