Add nf-test sharding CI (#1668)

- **ci: Copy over from methylseq**
- **ci: Move Sarek specific settings to ci**
- **ci: tap => xml**

<!--
# nf-core/sarek pull request

Many thanks for contributing to nf-core/sarek!

Please fill in the appropriate checklist below (delete whatever is not
relevant).
These are the most common things requested on pull requests (PRs).

Remember that PRs should be made against the dev branch, unless you're
preparing a pipeline release.

Learn more about contributing:
[CONTRIBUTING.md](https://github.com/nf-core/sarek/tree/master/.github/CONTRIBUTING.md)
-->

## PR checklist

- [ ] This comment contains a description of changes (with reason).
- [ ] If you've fixed a bug or added code that should be tested, add
tests!
- [ ] If you've added a new tool - have you followed the pipeline
conventions in the [contribution
docs](https://github.com/nf-core/sarek/tree/master/.github/CONTRIBUTING.md)
- [ ] If necessary, also make a PR on the nf-core/sarek _branch_ on the
[nf-core/test-datasets](https://github.com/nf-core/test-datasets)
repository.
- [ ] Make sure your code lints (`nf-core lint`).
- [ ] Ensure the test suite passes (`nextflow run . -profile test,docker
--outdir <OUTDIR>`).
- [ ] Check for unexpected warnings in debug mode (`nextflow run .
-profile debug,test,docker --outdir <OUTDIR>`).
- [ ] Usage Documentation in `docs/usage.md` is updated.
- [ ] Output Documentation in `docs/output.md` is updated.
- [ ] `CHANGELOG.md` is updated.
- [ ] `README.md` is updated (including new tool citations and
authors/contributors).

---------

Co-authored-by: Maxime U Garcia <[email protected]>

Author: edmundmiller

.github/nf-test-tags.yml

@@ -0,0 +1,50 @@
+exclude:
+  - tags: "bcftools/annotate"
+  - tags: "bcftools/concat"
+  - tags: "bcftools/mpileup"
+  - tags: "bcftools/sort"
+  - tags: "bwa/index"
+  - tags: "bwa/mem"
+  - tags: "bwamem2/index"
+  - tags: "bwamem2/mem"
+  - tags: "cat/cat"
+  - tags: "cat/fastq"
+  - tags: "cnvkit/antitarget"
+  - tags: "cnvkit/batch"
+  - tags: "cnvkit/reference"
+  - tags: "deepvariant"
+  - tags: "dragmap/align"
+  - tags: "dragmap/hashtable"
+  - tags: "ensemblvep/download"
+  - tags: "ensemblvep/vep"
+  - tags: "fastp"
+  - tags: "fastqc"
+  - tags: "fgbio/fastqtobam"
+  - tags: "freebayes"
+  - tags: "gatk4/applybqsr"
+  - tags: "gatk4/baserecalibrator"
+  - tags: "gatk4/estimatelibrarycomplexity"
+  - tags: "gatk4/genomicsdbimport"
+  - tags: "gatk4/haplotypecaller"
+  - tags: "gatk4/markduplicates"
+  - tags: "gatk4/mergevcfs"
+  - tags: "gatk4/mutect2"
+  - tags: "gatk4spark/applybqsr"
+  - tags: "gatk4spark/markduplicates"
+  - tags: "gawk"
+  - tags: "lofreq/callparallel"
+  - tags: "mosdepth"
+  - tags: "multiqc"
+  - tags: "ngscheckmate/ncm"
+  - tags: "samblaster"
+  - tags: "samtools/convert"
+  - tags: "samtools/mpileup"
+  - tags: "samtools/stats"
+  - tags: "snpeff/snpeff"
+  - tags: "strelka/germline"
+  - tags: "strelka/somatic"
+  - tags: "subworkflows/utils_nfvalidation_plugin"
+  - tags: "tabix/bgziptabix"
+  - tags: "tabix/tabix"
+  - tags: "tiddit/sv"
+  - tags: "untar"