Signed-off-by: NGoutham Veeramachaneni <cs14btech11014@iith.ac.in>

Add PATH_PREFIX to redirectToMigratedURL

Old grafana versions use this format, and it breaks with prometheus instances
not mounted in the root directory.

Fixing tests for Windows

Add _test.go suffix to promql/bench.go, split test.go in to two.

Renaming the name of a file of the config tests, in order to properly
use the Go build tags feature.

Fixing the config/config_test, the discovery/file/file_test and the
promql/promql_test tests for Windows. For most of the tests, the fix involved
correct handling of path separators. In the case of the promql tests, the
issue was related to the removal of the temporal directories used by the
storage. The issue is that the RemoveAll() call returns an error when it
tries to remove a directory which is not empty, which seems to be true due to
some kind of process that is still running after closing the storage. To fix
it I added some retries to the remove of the temporal directories.
Adding tags file from Universal Ctags to .gitignore

Add _test.go suffix to promql/{bench.go, test.go} to prevent importing the testing package in a normal binary.

Log the stopping of TargetManager in Info

Fixes #2715
Signed-off-by: NGoutham Veeramachaneni <cs14btech11014@iith.ac.in>

Make sure rendering config produces valid config

Fixes #2899
Signed-off-by: NGoutham Veeramachaneni <goutham@boomerangcommerce.com>

Remote queue manager: Fix typo

Change 'send' to 'sent'.

Add a colorScheme parameter to PromConsole.Graph, to allow using custom colors in console graphs.

Marathon SD: Set port index label

The changes [1][] to Marathon service discovery to support multiple
ports mean that Prometheus now attempts to scrape all ports belonging to
a Marathon service.

You can use port definition or port mapping labels to filter out which
ports to scrape but that requires service owners to update their
Marathon configuration.

To allow for a smoother migration path, add a
`__meta_marathon_port_index` label, whose value is set to the port's
sequential index integer. For example, PORT0 has the value `0`, PORT1
has the value `1`, and so on.

This allows you to support scraping both the first available port (the
previous behaviour) in addition to ports with a `metrics` label.

For example, here's the relabel configuration we might use with
this patch:

    - action: keep
      source_labels: ['__meta_marathon_port_definition_label_metrics', '__meta_marathon_port_mapping_label_metrics', '__meta_marathon_port_index']
      # Keep if port mapping or definition has a 'metrics' label with any
      # non-empty value, or if no 'metrics' port label exists but this is the
      # service's first available port
      regex: ([^;]+;;[^;]+|;[^;]+;[^;]+|;;0)

This assumes that the Marathon API returns the ports in sorted order
(matching PORT0, PORT1, etc), which it appears that it does.

[1]: https://github.com/prometheus/prometheus/pull/2506

Fixes #2827.

Check for invalid utf-8 in lexer strings.

This protects against invalid utf-8 sneaking
in via label_replace.

Replace OptionalArgs int with Variadic int.

Check target labels are valid. Check for address after relabelling.

config: set default region for EC2 SD

web: fix double prefix redirect

Fixes #2822
Fixes #2819

cut 1.7.0

Remote write: read first line of response and include it in the error.

vendor: fix mixed versions of gophercloud packages

* Add openstack service discovery.

* Add gophercloud code for openstack service discovery.

* first changes for juliusv comments.

* add gophercloud code for floatingip.

* Add tests to openstack sd.

* Add testify suite vendor files.

* add copyright and make changes for code climate.

* Fixed typos in provider openstack.

* Renamed tenant to project in openstack sd.

* Change type of password to Secret in openstack sd.